Don't buy your Steam Link and Steam Controller from Steam. Try a shop instead and save a few quid.
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Steam Controller on Steam
The steam controller says it is discounted when buying with Xcom 2, but the price is unchanged : r/Steam
3 Ways to Set Up a Steam Controller on Your PC - wikiHow
Amazon.com: Steam Controller : Video Games
Valve Steam Controller Review | PCMag
Steam Controller on Steam
Steam Controller on Steam
Amazon.com: Steam Controller Wireless Receiver : Video Games
I found this second-hand online and just had to buy it : r/SteamDeck
Buy Steam Controller Online at Low Prices in India | Valve Reviews & Ratings - Amazon.in
The Steam Link and controller now have a release date | KitGuru
Game One PH - Get the Steam Link or Steam Controller at 30% OFF when you buy at Game One PH anytime from September 29 to October 10 Only! <<Steam Link>> Play
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Pour one out for the Steam Controller, sold out forever after $5 fire sale - The Verge
Which controllers work with the Steam Deck?
Steam Controller Official Valve Controller Bundle 2 Game Pads With Steam Dongle | eBay