1688CMP

1688CMP is a free Chrome extension for cross-border sellers who source from 1688.com. On any 1688 product page it shows a panel that compares the estimated LANDED COST from 5 public sourcing agents — BuckyDrop, Supplyia, Superbuy, Oopbuy and CSSBuy — so you can pick the cheapest route before you order. Every figure comes from the agent's own published fee schedule, and the panel ranks agents by that cost alone — never by how much we might earn. WHAT IT SHOWS • Landed cost per agent: item price × qty + service fee + conditional surcharges (multi-piece, overweight, declaration) + optional add-ons + shipping estimate. • Category rules per agent: pick what you are sourcing (general / electronics / beauty / branded / food) and see who actually accepts it. Food and supplements are refused by most agents; branded goods need authorization; batteries and liquids must travel on specific lines. Restricted items are flagged with the reason, not silently hidden. • Line-level shipping: every agent's international shipping lines, each with its own price model (flat per kg, or first weight + continuation), transit time and volumetric divisor, so you can see how each quote was built rather than just the total. Lines are filtered by what you are shipping, and the panel picks the cheapest compatible one. • Full fee schedule per agent: every charge, with the condition that triggers it (e.g. "over 5 pcs: +¥2/pc", "storage free 90 days, then ¥0.1/item/day"). • Volumetric weight: enter parcel dimensions and the calculator uses max(actual, L×W×H ÷ divisor), the industry-standard billable weight. • Tiered shipping where the agent publishes it (e.g. CSSBuy US line: first 500g ¥235 + ¥55 per extra 500g). • Translate product name, specs and MOQ into your panel language with one click (only when you click; nothing is sent unless you ask). • One-click copy of your config (price, qty, weight, dims, destination, add-ons) to paste into an agent's own calculator or a support chat. • Self-calibration: record what you actually paid once, and that agent's shipping estimate converges toward your real bills over time. AFFILIATE DISCLOSURE 1688CMP is free and we do not add any markup to the prices shown. Some outbound links to the sourcing agents are affiliate links: if you order through them, the agent may pay us a commission, at no extra cost to you. The total you pay the agent is the same either way, and every price in this panel is the agent's own figure — we never change a number to make a click more likely. You can compare and open every agent without going through a tracked link. HOW IT WORKS Everything runs locally. The agent list and fee data ship inside the extension; there is no backend, no account and no login. There are exactly two situations where the extension talks to the network: (1) when you click through to an agent's website, and (2) when you press Translate — that sends only the visible product title / spec / MOQ text to a public translation endpoint and caches the result locally. Product IDs, URLs and your browsing history are never sent. PRIVACY • No analytics, no ads, and we operate no server that could collect your browsing history. When you open an agent's site, that agent sees the referral as any affiliate link would show — that is the only disclosure, and it happens only when you click. • Permissions: storage (your settings), tabs/activeTab (detect the current 1688 product page). Host permissions: 1688.com product pages, plus the two public translation endpoints used only by the Translate button. • The Translate button is the only feature that leaves your browser with page text, and it only runs when you click it. SUPPORT Questions: sam.wang01@icloud.com Website: https://1688cmp.com/