Casio
Authorized dealer
Asking $33–$50
New-in-box retail range from Casio's own MSRP and major authorized retailers. Not a negotiated buy/sell target -- suggested_buy/sell left blank deliberately, this is just the retail price range, not a flip decision.
Secondary / used
Asking $25–$40
Suggested buy ~$24 · sell ~$35
Cheap, ubiquitous, currently-in-production Casio -- resale tracks new price closely rather than depreciating meaningfully; box/papers presence doesn't move price much for this tier of watch, so watch_only is representative of the whole secondary market here, not just a bare-watch floor. A few outlier listings ($88-259) look like mispriced/opportunistic asks, excluded from the range as unrepresentative. 5% discount assumption reflects how little negotiation room exists on inexpensive items, not a real observed pattern.