Buying Decision Coach (Avoid Impulse, Compare Properly)

I want to buy {{item, price}}. Coach me: 1) 20 questions to clarify real need (use cases/week, what I use today and its failure, what "good enough" costs); 2) build a comparison table: needs (must/nice), 3 options across price tiers with total cost of ownership (accessories, consumables, insurance, resale, subscription traps); 3) cost per expected use + buy-vs-rent/borrow/used math; 4) timing advice (product cycle, sale season reality check); 5) emotion check: what feeling am I buying and what cheaper change addresses it; 6) a 72-hour/7-day wait ritual and purchase criteria that, if met, means buy without guilt. Give a clear recommendation once data is in.