There's the Panasonic Grid-Eye, the Melexis MLX90621, and the Omron D6T.
I believe Heimann Sensor also makes an 8x8 digital array(HTPA8x8d), but I only have experience in using the 32x32 one(~$60ish) and haven't seen any quotes for the price or availability of the 8x8 variant.
None of them will be particularly cheap.