I was just browsing Amazon and I stumbled onto the, quote: "MechanicalEagle Z-77 87 Keys Mechanical Gaming Keyboard with Blue Switches DIY Replaceable Switches - Black". And it's $28.99 plus free shipping right now.
TKL, metal top, Outemu Blue switches. Kind of ugly, though. It looks like they hit the price point by selling a LED keyboard without the LEDs.
I've already got a keyboard with Outemu blues, and I like them pretty well. Also, it should be easy to swap out these switches and keycaps later on, whenever you feel like spending some more money and doing some tinkering.