{"id":"search-sb-pos-system-research-pages","audience":"small-business","category":"ai-search","track":"research","technique":"grounding","title":"Compare 3 card readers from the pages you found","free":false,"task":"You run a coffee cart doing about $8,000 a month in card sales and found pages on 3 card readers. Write exactly 4 numbered lines: one per reader showing its monthly cost as math (monthly fee + fee rate x $8,000 = total), then Pick: with the cheapest one. Use the vendor's own page when it disagrees with a review site. Plain text, under 90 words.","materialLabel":"The pages you found (attached to your prompt automatically)","material":"PAGES I SAVED\n\nTapTill - vendor pricing page (Oct 2026)\n\"No monthly fee. 2.9% per card payment. Reader: $49 one time.\"\n\nTapTill - review on CartBiz Blog (Feb 2025)\n\"TapTill charges 2.6% per tap and nothing monthly. Best deal around.\"\n\nKettle Pay - vendor pricing page (Sept 2026)\n\"Starter plan: $15/month + 2.5% per card payment. Free reader with annual plan.\"\n\nKettle Pay - Kettle Pay Pro plan, same page\n\"$60/month + 2.2% per card payment. Includes inventory tools.\"\n\nMarketDot - vendor pricing page (Aug 2026)\n\"$25/month + 2.6% per payment. Reader $79.\"\n\nMarketDot - comparison site PayCompare (2024)\n\"MarketDot: 2.3% per payment, $25/month.\"\n\nMy notes:\n- about $8,000/month in card sales, maybe more in December\n- don't need inventory tools, I sell 6 drinks\n- reader cost is one-time, ignore it for monthly cost\n- my cousin says TapTill is the cheapest","rules":[{"type":"numberedItems","count":4},{"type":"maxWords","max":90},{"type":"plainText"}],"mistakes":[{"title":"Not saying which page wins","why":"The AI mixes in the older review rates that make TapTill and MarketDot look cheaper.","fix":"Add: \"Use the vendor's own page when it disagrees with a review.\"","checks":["r0"]},{"title":"Not showing the math","why":"The AI states a winner without numbers, so you can't check it.","fix":"Show the shape: \"Kettle Pay: 15 + 2.5% x 8,000 = $215.\"","checks":["r0","numberedItems"]},{"title":"Leaving the plan open","why":"The AI compares the Pro plan or adds the reader price to the monthly cost.","fix":"Add: \"Use the Starter plan; leave out one-time reader costs.\"","checks":["r1"]},{"title":"Pick before the numbers","why":"The AI leads with a recommendation and then justifies it.","fix":"Add: \"Pick: goes last, after the 3 cost lines.\"","checks":["r2"]},{"title":"Long answer in markdown","why":"AI writes a bold-headed comparison with pros and cons.","fix":"Add: \"Exactly 4 lines, each under 18 words, plain text.\"","checks":["maxWords","plainText"]}],"promptHints":[{"label":"Says which source wins","patterns":["vendor('s)? (own )?page","official","newest"]},{"label":"Asks to show the math","patterns":["show (the )?math","x 8,?000","\\+ .*%"]},{"label":"Sets the plan and exclusions","patterns":["starter","reader","one.?time"]},{"label":"Puts the pick last","patterns":["pick:","last line","after the"]},{"label":"Sets length and format","patterns":["\\b(4|four)\\b.{0,20}lines","plain","under \\d+ words"]}],"hint":"Review sites go stale fast. Tell the AI which page wins, show the math per option, and put the pick last.","rubricLabels":["The lines show TapTill 0 + 2.9% x 8,000 = $232, Kettle Pay Starter 15 + 2.5% x 8,000 = $215, and MarketDot 25 + 2.6% x 8,000 = $233, using the vendor pages' rates (not 2.6% for TapTill or 2.3% for MarketDot)","The reader prices are left out of the monthly cost, and Kettle Pay uses the Starter plan (not Pro)","Line 4 is Pick: Kettle Pay Starter (about $215 a month), and it comes after the 3 cost lines"]}