Compare his prices to others. You'll be able to afford to modify your whole car by calling this guy. I mean, com'n. That's really a great price compared to what others charge. Higher prices don't always necessarily mean better performance.
Some places just have higher rent, employee overhead, advertising, etc.
Fuel Injection Specialties Lots of great information on throttle bodies and fuel injection for LT1 engines and predessors. Great reading material. Centrally located in the Chicagoland area. Welcoming members from Illinois, Indiana, Iowa and Wisconsin. Also has hoods for TransAm's.