FREE BROWSER EXTENSION
CSDB Companion
Stop overpaying on the Steam Market. See every CS2 item's price across 8 marketplaces — right on the Steam page, with the cheapest highlighted and your savings vs Steam spelled out.
What you get
Cross-market compare
Buff163, Skinport, CSFloat, DMarket, Waxpeer, BitSkins, CS.MONEY and Steam prices for the exact item you're viewing — wear included.
Best-price highlight
The cheapest listing is flagged with your % savings vs Steam, with a one-click jump to that marketplace.
Instant lookup popup
Not on Steam? Pop the extension open and search any market name for the same cross-market table.
Private by design
No account, no tracking, no analytics. One request per item, to csdb.gg, that's it.
FAQ
What does the CSDB Companion extension do?
On any CS2 Steam Market listing it shows the same item's price on Buff163, Skinport, CSFloat, DMarket, Waxpeer, BitSkins, CS.MONEY and Steam side by side, highlights the cheapest, and shows how much you'd save versus buying on Steam.
Is it free?
Yes — completely free. It uses CSDB's public price snapshot, refreshed twice daily.
Does it collect my data?
No. There's no account, no tracking, and no analytics in the extension. It only requests prices for the item on the page you're viewing, from csdb.gg.
Which browsers are supported?
Chrome and Chromium-based browsers (Edge, Brave, Opera) via the Chrome Web Store. Firefox support is planned.