We like to answer that with another question. Why are the others so expensive? It’s a throttle body, 4 injectors, a few sensors and an ECU. Not much there when you really break it down. Our OE ties allow us to source components at a great rate and our engineering is spread over many projects so it is not all rolled into the price of one system. We have been designing OE systems privately for 16 years and believe that the only way the EFI will EVER replace a carburetor is if the cost gets more reasonable. We have been working to make that happen and this is the first step. Expect more in the future ! Go EFI!!