diff --git a/scripts/taler-monitoring/README.md b/scripts/taler-monitoring/README.md
index 3641c24..35edc67 100644
--- a/scripts/taler-monitoring/README.md
+++ b/scripts/taler-monitoring/README.md
@@ -61,9 +61,10 @@ Other domains: never SSH. Optional **e2e** aborts cleanly on login/KYC.
 # customize:
 E2E_WITHDRAW_VALUES="20 50 100" E2E_PAY_VALUES="0.05 1 5" ./taler-monitoring.sh e2e
 E2E_VARIABLE=0 WITHDRAW_AMT=GOA:50 PAY_AMT=GOA:1 ./taler-monitoring.sh e2e   # single fixed
-# GOA shop catalog (local hacktivism): public template POST + wallet pay per product
+# GOA shop catalog (local hacktivism): full list in E2E_SHOP_PRODUCTS; each run
+#   shuffles and pays E2E_SHOP_PICK_N products (default 2).
 #   E2E_SHOP_PRODUCTS lines: id|Product name|GOA:amount
-#   E2E_SHOP_PRODUCTS=$'orbit-sticker|Orbit sticker pack|GOA:2\nnebula-coffee|Nebula coffee|GOA:5'
+#   E2E_SHOP_PICK_N=2
 #   (landing QR = taler://pay-template/…/{id}; popup = live taler://pay after POST templates/{id})
 # remote secrets:
 #   E2E_BANK_ADMIN_PASS=…  E2E_MERCHANT_TOKEN=…
diff --git a/scripts/taler-monitoring/TESTS.md b/scripts/taler-monitoring/TESTS.md
index 4294297..c521212 100644
--- a/scripts/taler-monitoring/TESTS.md
+++ b/scripts/taler-monitoring/TESTS.md
@@ -132,12 +132,13 @@ Without SSH (`SKIP_SSH=1` or remote domain): still runs outside-in repo checks;
 | e2e-003 | mode / currency info |
 | e2e-004… | secrets, reachability gates |
 | e2e-… | account, credit, withdraw, confirm, coins, order, pay ladder |
-| e2e-… | **GOA shop products** by **product name** (public template POST → `taler://pay`, pay-template URI, payto) |
+| e2e-… | **GOA shop products** — full catalog list; **random pick of 2** (override `E2E_SHOP_PICK_N`) |
 | e2e-… | balances, dig on failure |
 
-Shop product pays use instance `goa-demo-cp4zqk` (default) and `E2E_SHOP_PRODUCTS`
-(`id|Product name|amount` lines). Flow matches the landing popup (public POST
-`/templates/{id}`, not private orders). Report labels use the product name.
+Shop product pays use instance `goa-shop` (default) and catalog `E2E_SHOP_PRODUCTS`
+(`id|Product name|amount` lines). Each e2e run **shuffles** the catalog and pays
+only `E2E_SHOP_PICK_N` products (**default 2**). Flow matches the landing popup
+(public POST `/templates/{id}`, not private orders). Report labels use product name.
 
 Blockers keep the same ID prefix: `[BLOCKER] e2e-0NN step: message`.
 
diff --git a/scripts/taler-monitoring/check_e2e.sh b/scripts/taler-monitoring/check_e2e.sh
index 644c134..2cbf8c4 100755
--- a/scripts/taler-monitoring/check_e2e.sh
+++ b/scripts/taler-monitoring/check_e2e.sh
@@ -867,9 +867,10 @@ sys.exit(0 if d.get("paid") is True or str(d.get("order_status","")).lower()=="p
   return 1
 }
 
-# GOA shop samples from merchant landing (taler.hacktivism.ch/intro/)
-# id|product_name|amount — keep in sync with configs/merchant-landing/index.html
-# Landing QR encodes taler://pay-template/…/{id}; popup creates live pay via public POST templates/{id}.
+# GOA shop catalog (full list) — keep in sync with configs/merchant-landing/index.html
+# id|product_name|amount
+# Landing QR = taler://pay-template/…/{id}; popup = public POST templates/{id}.
+# E2E does not pay every product every run: shuffle + pick E2E_SHOP_PICK_N (default 2).
 : "${E2E_SHOP_PRODUCTS:=orbit-sticker|Orbit sticker pack|GOA:2
 nebula-coffee|Nebula coffee|GOA:5
 voidwave-playlist|Voidwave playlist|GOA:8
@@ -881,9 +882,12 @@ eclipse-shades|Eclipse shades|GOA:12
 star-chart|Star chart print|GOA:7
 rainbow-pill|Rainbow pill (sample/joke)|GOA:4.2
 blue-or-red-pill|Blue or red pill (sample/joke)|GOA:1.5}"
+: "${E2E_SHOP_PICK_N:=2}"
+# Public templates live on goa-shop (landing shop-pay.js); not the e2e default demo instance.
+: "${E2E_SHOP_INSTANCE:=goa-shop}"
 
 # Settlement payto shown on landing shop popup (static)
-: "${E2E_SHOP_PAYTO:=payto://x-taler-bank/bank.hacktivism.ch/goa-demo-cp4zqk?receiver-name=GOA%20Demo%20Shop%20cp4zqk}"
+: "${E2E_SHOP_PAYTO:=payto://x-taler-bank/bank.hacktivism.ch/goa-shop?receiver-name=GOA%20Shop}"
 
 # Pay one shop product the way the public landing does:
 #   POST /instances/{inst}/templates/{id} body {} → order_id+token → taler_pay_uri
@@ -1108,7 +1112,7 @@ fi
 # ---------------------------------------------------------------------------
 section "e2e · GOA shop products (merchant landing catalog)"
 # ---------------------------------------------------------------------------
-# Public template POST + wallet pay — product id|name|amount (landing QR = pay-template).
+# Public template POST + wallet pay — full catalog list, random pick of N products.
 SHOP_OK=0
 SHOP_OK_N=0
 SHOP_FAIL_N=0
@@ -1117,45 +1121,78 @@ SHOP_REPORT=""
 if [ "$E2E_REMOTE" = "1" ] || [ "${CUR:-}" != "GOA" ]; then
   info "goa-shop" "SKIPPED (remote or non-GOA currency)"
 else
-  info "goa-shop" "public template pays for each sample (id · product name · amount)"
-  info "goa-shop payto" "$E2E_SHOP_PAYTO"
+  # Build catalog array from E2E_SHOP_PRODUCTS (id|name|amount lines)
+  SHOP_CATALOG=()
   while IFS= read -r line; do
     [ -z "$line" ] && continue
     case "$line" in \#*) continue ;; esac
-    e2e_over && { warn "goa-shop" "time budget low — stopping product pays"; break; }
-    pid=$(printf '%s' "$line" | cut -d'|' -f1)
-    pname=$(printf '%s' "$line" | cut -d'|' -f2)
-    pamt=$(printf '%s' "$line" | cut -d'|' -f3)
-    [ -z "$pid" ] || [ -z "$pamt" ] && continue
-    [ -z "$pname" ] && pname="$pid"
-    av_now=$(wallet_avail_num)
-    pay_n=$(python3 -c 'import sys; print(float(sys.argv[1].split(":",1)[-1]))' "$pamt" 2>/dev/null || echo 0)
-    if ! python3 -c "import sys; sys.exit(0 if float(sys.argv[1]) + 1e-12 >= float(sys.argv[2]) else 1)" "$av_now" "$pay_n" 2>/dev/null; then
-      warn "goa-shop $pname ($pid)" "skip — insufficient avail ${CUR}:${av_now} (need ${pay_n})"
-      SHOP_SKIP_N=$((SHOP_SKIP_N + 1))
-      SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=SKIP(bal)"
-      continue
-    fi
-    set +e
-    e2e_one_pay_public_template "$pid" "$pname" "$pamt"
-    pc=$?
-    set -e
-    if [ "$pc" = "0" ]; then
-      SHOP_OK=1
-      SHOP_OK_N=$((SHOP_OK_N + 1))
-      PAY_OK=1
-      PAY_OK_N=$((PAY_OK_N + 1))
-      SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=OK"
-    else
-      SHOP_FAIL_N=$((SHOP_FAIL_N + 1))
-      SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=FAIL"
-    fi
+    SHOP_CATALOG+=("$line")
   done <<EOF
 $E2E_SHOP_PRODUCTS
 EOF
-  info "goa-shop summary" "$SHOP_REPORT (ok=$SHOP_OK_N fail=$SHOP_FAIL_N skip=$SHOP_SKIP_N)"
-  if [ "$SHOP_OK" != "1" ] && [ "$SHOP_FAIL_N" -gt 0 ]; then
-    warn "goa-shop" "no sample product payment succeeded ($SHOP_REPORT)"
+  SHOP_CAT_N=${#SHOP_CATALOG[@]}
+  PICK_N="${E2E_SHOP_PICK_N:-2}"
+  case "$PICK_N" in ''|*[!0-9]*) PICK_N=2 ;; esac
+  if [ "$PICK_N" -lt 1 ]; then PICK_N=1; fi
+  if [ "$SHOP_CAT_N" -eq 0 ]; then
+    warn "goa-shop" "empty E2E_SHOP_PRODUCTS catalog"
+  else
+    if [ "$PICK_N" -gt "$SHOP_CAT_N" ]; then PICK_N=$SHOP_CAT_N; fi
+    # Shuffle catalog, take first PICK_N (portable: python)
+    SHOP_PICKED=$(
+      printf '%s\n' "${SHOP_CATALOG[@]}" | python3 -c "
+import random, sys
+lines = [ln.strip() for ln in sys.stdin if ln.strip()]
+n = min(int(sys.argv[1]), len(lines))
+random.shuffle(lines)
+print('\n'.join(lines[:n]))
+" "$PICK_N"
+    )
+    info "goa-shop" "catalog ${SHOP_CAT_N} products · random pick ${PICK_N} · instance ${E2E_SHOP_INSTANCE}"
+    info "goa-shop payto" "$E2E_SHOP_PAYTO"
+    info "goa-shop pick" "$(printf '%s\n' "$SHOP_PICKED" | cut -d'|' -f1,2 | tr '\n' '; ' | sed 's/; $//')"
+    # e2e_one_pay_public_template uses global INST — temporarily pin shop instance
+    _E2E_INST_SAVE="$INST"
+    INST="${E2E_SHOP_INSTANCE}"
+    while IFS= read -r line; do
+      [ -z "$line" ] && continue
+      e2e_over && { warn "goa-shop" "time budget low — stopping product pays"; break; }
+      pid=$(printf '%s' "$line" | cut -d'|' -f1)
+      pname=$(printf '%s' "$line" | cut -d'|' -f2)
+      pamt=$(printf '%s' "$line" | cut -d'|' -f3)
+      [ -z "$pid" ] || [ -z "$pamt" ] && continue
+      [ -z "$pname" ] && pname="$pid"
+      av_now=$(wallet_avail_num)
+      pay_n=$(python3 -c 'import sys; print(float(sys.argv[1].split(":",1)[-1]))' "$pamt" 2>/dev/null || echo 0)
+      if ! python3 -c "import sys; sys.exit(0 if float(sys.argv[1]) + 1e-12 >= float(sys.argv[2]) else 1)" "$av_now" "$pay_n" 2>/dev/null; then
+        warn "goa-shop $pname ($pid)" "skip — insufficient avail ${CUR}:${av_now} (need ${pay_n})"
+        SHOP_SKIP_N=$((SHOP_SKIP_N + 1))
+        SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=SKIP(bal)"
+        continue
+      fi
+      set +e
+      e2e_one_pay_public_template "$pid" "$pname" "$pamt"
+      pc=$?
+      set -e
+      if [ "$pc" = "0" ]; then
+        SHOP_OK=1
+        SHOP_OK_N=$((SHOP_OK_N + 1))
+        PAY_OK=1
+        PAY_OK_N=$((PAY_OK_N + 1))
+        SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=OK"
+      else
+        SHOP_FAIL_N=$((SHOP_FAIL_N + 1))
+        SHOP_REPORT="${SHOP_REPORT}${SHOP_REPORT:+ }${pname}=FAIL"
+      fi
+    done <<EOF
+$SHOP_PICKED
+EOF
+    INST="$_E2E_INST_SAVE"
+    unset _E2E_INST_SAVE
+    info "goa-shop summary" "$SHOP_REPORT (ok=$SHOP_OK_N fail=$SHOP_FAIL_N skip=$SHOP_SKIP_N · pick $PICK_N/$SHOP_CAT_N)"
+    if [ "$SHOP_OK" != "1" ] && [ "$SHOP_FAIL_N" -gt 0 ]; then
+      warn "goa-shop" "no sample product payment succeeded ($SHOP_REPORT)"
+    fi
   fi
 fi