But that's not a high performance FPGA. Believe me, I have a ton of FPGAs at home (starting even cheaper than that), and I write about them all the time: https://rwmj.wordpress.com/?s=fpga
However if you're doing the sort of work which isn't just hobbyist stuff, you're going to spend 1000s on a board. This is the sort of thing commercial developers will be using: https://www.xilinx.com/products/boards-and-kits/ek-v7-vc707-...