anyone know of where I can find one for less than $75?

needs to fit full size keg

Craigslist has tons. Chest freezer works well too. Just adjust the temp.

Got one for my kegerator build at Kaady Appliance on Hwy 99. They delivered for no additional charge.

I just finished my kegerator.  I kind of cheated though,  and used a real fridge from a bar,  and got a very neat brass tap box.  It fits 6 1/6th barrel kegs,  20# co2 cylinder, a carboy full of my new brew while it is cold crashing,  and several half gallons of liquor.  

You can find fridges all over craigslist,  but I've found that it's not typically the best deal to buy a super cheap fridge... It might need more work than it's worth.  Also,  converted freezers might not be tall enough.  

If you find a fridge though and need a draft tower,  I have two spares.  No faucets, and they need some heavy cleaning... But I'll trade you a tower for a 6-pack of any IPA.