Well, digikey wells the VNH2s (each IC contains a single H bridge) for a unit price of $10.51 (and VNH3s for 8.26 each), so I suppose you could buy the chip and surface-mount it yourself to a PCB. I'm not sure what other high current H bridges are out there, but I expect the prices would be similar to this. Driving a motor at 14 A continuous is much harder than driving a motor at 1 A continuous.