Depends what the product is - Obviously it's too pricey for what the FPGA is for mass production, but I've seen development boards that cost a several hundred d

Depends what the product is - Obviously it's too pricey for what the FPGA is for mass production, but I've seen development boards that cost a several hundred dollars each (or even a few thousand dollars, depending on the size of the FPGA!) used in low-volume stuff (in the defence sector especially). This is especially the case for large FPGAs because they can be very cheap in quantity, but if you only need one or two dozen, just the chip can be more expensive than the evaluation board, even before the cost of designing and building a custom board!