Summary
Reduce reliance on coarse defaults when computing landed-cost comparisons.
Why
Tax handling is still mostly based on default rate and state text, and shipping interpretation can still be too approximate for close comparisons.
Scope
- tighten tax estimation behavior with clearer fallbacks and uncertainty handling
- improve shipping normalization for ranking and mismatch watchouts
- distinguish estimated vs explicit costs in the comparison summary
- review how landed-cost uncertainty should affect sorting and filtering
Acceptance criteria
- landed-cost calculations better reflect available eBay data
- estimated costs are clearer in the popup
- ranking is less likely to overtrust weak tax/shipping assumptions
Summary
Reduce reliance on coarse defaults when computing landed-cost comparisons.
Why
Tax handling is still mostly based on default rate and state text, and shipping interpretation can still be too approximate for close comparisons.
Scope
Acceptance criteria