First post, please be easy on me.
I was at Walmart this morning and noticed a Nighthawk X4 in the clearance area for only $75.
Walmart.com has it for $150
Make sure its the V2 as people have said the first one is awful. The V2 says (R7500V2) on the side under package contents and says "Now with MU-MIMO" on the front badge.
As being clearance it's very YMMV but it might be worth a try if your local Walmart has one in stock.