The FPGA-based bladeRF SDR is offered by Nuand of San Francisco. The line includes:

Model Price
bladeRF 2.0 micro xA9 $720
bladeRF 2.0 micro xA4 $480
bladeRF x115 $650
bladeRF x40 $420

The underlying FPGAs are not fully utilized by the radio software itself, and can thus be extended by the user.