Lets see, going by the specs on my "bad" one...
MH/HPS/PAR/COM Min Ignition(V):190
Un(V): 220-240 Out(W) 35-250
In(A): MAX 2.5 Fn(Hz): 50/60
Eitherway looking at that McMaster's one, it's hard to tell, since the ANSI code is for a sodium bulb, and at that price I might as well get the hellolights one that I know will work. But I do appreciate the help Gresham.
I tracked one possibility down from another place online for $17, says it's for 35-150w MH bulbs, however I sent off an email asking for specs on it, since there are two separate types of 150W ballasts, M81 (HQI/DE types) and M102 (screw in socket, I'm guessing different ignition)
Eileen, hmm didn't think of that, I always assumed they were simply some sort of store that only dealt with the wanna-be electrician (you know the guys who have a pickup truck, think that qualifies them as contractors for the home).
I popped open the bad one to see if it's simply a bad capacitor or something I could diagnose, but the whole damn thing is encased in resin... lil' bastards don't want to let their secrets go!