Purchase decisions without guesswork
See whether a deal is truly worth it
Calculate full cost, compare price with a benchmark, assess risk and set a negotiation ceiling. No sign-up and no user data sent to our server.
Worth considering
Most common tasks
Start with the right calculator
Every tool shows its assumptions and lets you save the analysis locally.
Deal analyzer
A complete assessment of price, costs, risk and a recommended negotiation ceiling.
CalculatorTotal cost calculator
Calculate purchase, delivery, setup, running costs, repairs and resale.
CalculatorTarget price calculator
Set an opening offer, target price and maximum purchase ceiling.
CalculatorCompare two deals
Compare two deals by full cost, not just the sticker price.
CalculatorBuy or rent calculator
Compare ownership and rental costs over your chosen period.
CalculatorNew or used calculator
Compare new and used options including repairs and resale.
Match the purchase
Deal categories
How to assess a car deal
Post-purchase costs, financing, condition, documentation and target price.
CategoryHow to assess an electronics deal
Battery health, completeness, warranty, repairs, updates and resale.
CategoryHow to assess a renovation quote
Scope, labour, materials, contingency, schedule and contractor comparison.
CategoryHow to assess a property deal
Price, extra costs, technical condition, ownership costs and rental alternative.
CategoryService quote analysis: price, scope and risk
Scope, deliverables, timing, responsibility, revisions and final price.
CategoryHow to assess a subscription
Full lifetime cost, upfront fee, increases, cancellation and purchase alternative.
CategoryHow to assess appliances and tools
Durability, service, parts, energy use, warranty and practical value.
CategoryHow to assess used purchases safely
Condition, inspection, history, seller reliability and restoration costs.
Knowledge before deciding
Essential guides
How to establish a reliable market price
How to collect comparable listings, reject outliers and adjust for condition.
GuideHidden purchase costs: complete checklist
A list of costs that can turn a cheap offer into an expensive decision.
GuideHow much to negotiate and where to start
How to set an opening offer, target and walk-away price without guessing.
GuideHow to compare deals that look different
Normalize scope, time horizon, quality and costs before choosing.
GuideRed flags in a listing
Signals of pressure, ambiguity, missing documentation and avoidance of verification.
GuideSafe purchase from a private seller
How to prepare inspection, payment, evidence and collection.