Corsair sells remanufactured kbs. I paid 60 for k70 mk2 rapidfire. Retail is 170

How about a James Donkey 619 and the main reason is it comes with Gateron switches (black, brown, blue, red) which have been praised over MX. It's available on Aliexpress for around 45$

That link... all backlit. If you need to be looking at your keyboard your monitor is always shining a light on it anyway.

https://www.ikbckeyboard.com/copy-of-single-color-backlight

cherry mx, pbt (thicker plastic)

I use the "GigaByte Force K83" with pure red switches at home and blue switches plus o-rings at work, they are very solid and only cost 40€ each.

The english link is missing most of the information, so check out the german link which mostly is in english, besides the first couple of lines:
https://www.gigabyte.com/de/Keyboard/FORCE-K83#kf
On GigaByte's twitter you can find the additional information, that the black backplate is anodised metal.

But it was such a good offer, that in most places they are sold out:
In shops the price of the 105 Cherry MX switches alone, exceeded the 40€ of this complete keyboard.
If you are lucky, they still might have it in stock in murica or in other countries, where the US-layout wasn't selling good.

PS: I forgot to mention, that nowadays there are several alternatives to Cherry MX switches, which have a good quality and price.