There are cheap and expensive FPGA’s. Some of the more expensive FPGA’s can be bought much cheaper by buying an off-the-shelf FPGA development board. Terasic comes to mind, but both Altera (Intel now) and Xilinx sell development boards too. If I need some component (like an FPGA), I usually check farnell, digikey and mouser. But I am sure there are others out there.
Hardware and software advisor for tech startups. ASIC, FPGA, RPi, Arduino, AI, robots, drones, blockchain, Machine learning, vision processing, IoT and 3D printers are my fields of expertise.