The Steam controller for PC is currently on sale for $5 (+$8 shipping).
I'm gonna skip this one; partly due to the high shipping bullshit (it doesn't cost that much to ship, the price is just higher than you're listing), partly because I'm just trying to cur back on the physical stuff I own, and partly because I bought a Steam Link back when those were super cheap and it's still in the box.
Also I've already got some controllers that work well on PC - X360 & XBONE gamepads.
Still, it's a decent deal even with the shipping fee, and the controller is supposed to be well made - if you need a controller for PC/Steam games it's worth getting and far cheaper than a good-quality console controller like a PS4 or XBONE pad.