Free tools for resellers

Reseller calculators, every one of them free.

Compare fees, optimize titles, estimate shipping, plan taxes — no signup, no paywall. Built by the team behind CrossWire.

Compare net profit across 6 marketplaces side by side.

Margin, ROI, break-even price — line-item breakdown.

USPS · UPS · FedEx · Pirate Ship rates compared.

SEO-optimized titles tailored to every platform's limit.

Paste a title, get an SEO score + improvement ideas.

Trending tags for Depop, Poshmark, and Instagram.

Estimate self-employment tax + quarterly payments.

Find the marketplaces best suited to what you sell.

Quantify hours and dollars saved by cross-listing.

Done crunching numbers?

CrossWire turns the math into reality: cross-list once, sell anywhere, auto-delist the second something sells. Free forever for casual sellers.