{"id":"pm-vendor-annual-cost-compare","audience":"product-managers","category":"decisions","track":"data","technique":"verification","title":"Compare two vendors' yearly cost with the math shown","free":false,"task":"You're choosing an in-app chat vendor and need to compare yearly costs. Write exactly 2 numbered lines, one per vendor, each showing the math for year-one cost (monthly price x 12 + one-time fees = total), then one final line starting 'Pick:' naming the cheaper vendor, plain text, under 80 words. Use the corrected quote and the expected seat count.","materialLabel":"Vendor quotes (attached to your prompt automatically)","material":"In-app chat vendor quotes - Pantrywise support team\n\nExpected seats: 12 agents in year one. (Draft plan said 10; support lead confirmed 12 on Mar 4.)\n\nChatwell:\n- $45 per seat per month.\n- One-time setup fee: $1,500.\n- Quote dated Feb 20.\n\nTalkbox:\n- $40 per seat per month.\n- One-time setup: $0.\n- One-time data migration fee: $2,000 (required, we're moving 3 years of chat history).\n  CORRECTED QUOTE (Mar 6): $50 per seat per month after they added the SSO requirement. Migration fee unchanged.\n\nOther: both meet our security checklist. Chatwell has better reviews; Talkbox has a nicer mobile app. Decide on cost; the team said features are a tie.","rules":[{"type":"numberedItems","count":2},{"type":"maxWords","max":80},{"type":"plainText"}],"mistakes":[{"title":"Asking 'which is cheaper'","why":"The AI gives an answer and a paragraph without the math you can check.","fix":"Show it: \"1. Chatwell: $45 x 12 seats x 12 months + $1,500 = $7,980\".","checks":["r0","numberedItems"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each line instead: \"each line under 20 words.\"","checks":["maxWords"]},{"title":"Using the old quote or seats","why":"The $40 price and 10 seats both appear first, with corrections below.","fix":"Add: \"Use 12 seats and Talkbox's corrected $50 price.\"","checks":["r1"]},{"title":"Verdict before numbers","why":"The AI opens with its pick and adds feature opinions.","fix":"Add: \"Pick line last, after both totals. Cost only. Plain text.\"","checks":["r2","plainText"]}],"promptHints":[{"label":"Asks to show the math","patterns":["show.{0,15}(math|work)","x 12","= total","calculation"]},{"label":"Uses the corrections","patterns":["12 seats","\\$?50","correct"]},{"label":"Puts the pick last","patterns":["pick:? .{0,20}(last|after)","final line","then.{0,10}pick"]},{"label":"Decides on cost only","patterns":["cost only","features are a tie","no reviews"]},{"label":"Sets a word limit","patterns":["\\d+\\s*words","word (limit|count)"]}],"hint":"When the AI does math for a decision, make it show the math first and decide after. Also tell it which quote and seat count are current.","rubricLabels":["Chatwell's line shows $45 x 12 seats x 12 months + $1,500 = $7,980 (any clear equivalent like $540 x 12 + $1,500 is fine)","Talkbox's line uses the corrected $50 per seat: $50 x 12 seats x 12 months + $2,000 = $9,200, not the old $40 price","The final line starts 'Pick:' and names Chatwell, comes after both cost lines, and nothing about reviews or the mobile app appears"]}