Hmm, interesting. I have around $68 plus spark plug wires and spark plugs, then some small things into my ignition. Junkyard ignition coils and brackets cost me $11 (some how a friend get's them amazingly cheap), the crank trigger wheel, $32, crank sensor $25, junkyard cam sensor from a 4-cylinder FWD transmission, hacked up stock points distributor, a short length of 3/4" aluminum tubing a local store was trying to get rid of. So probably all in around $120 ignition system that will light off almost any amount of boost you put in the engine.
Rebuilding an OHC Pontiac 250 with EFI and a Turbo