Well, like a 30-pack of 100's, but fairly close. Compared to today's triggers, they're gargantuan (and the receiver sucks up AA's like crazy, finally got the AC adapter).
They work quite well, but I did get occasional pops from radio interference (or something - some locations they'd just go off a lot on their own). I used them regularly on shoots where travel, models, stylists and so on made it a $10 - $20k day and they never let me down, and the rental houses always had extra receivers.
I don't think they compare well to a modern trigger, which are just as dependable and have longer battery life, and are very small with far more channel choices. Throw in how many pro level packs have built in receivers, too. Shooting with the transmitter on the hot shoe of a 35 was pretty sucky.
Still, mine must be close to 20 and still useable.