Buying stock from distros (RareWaves discount sales) → need per-COPY cost + a new/used flag.
- inventory.cost_price (per copy — costs vary per copy of the same release) + cost_source ('rarewaves #592619')
- inventory.condition_type 'new'|'used' (default used); backfilled 451 sealed → new
RareWaves analysed = Shopify; order pages give barcode (in /products/<ean>- handle) + title + qty + unit cost
($X.XX/ea). Wishlist = Klevu app (harder). Full plan in RAREWAVES_INGEST_PLAN.md.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
