Well, crap was maybe too strong of a word but they're nothing to write home about and not very precise (–4 to +10 seconds). OP seems attached to historical value, and if you ask me there's more interesting vintage watches to buy for that money, and some watches that will hold their value and aesthetics way more than PRX, which is all the rage now and will probably get old pretty fast.
Reliable pretty much yes; serviceable -- depends on your definition of that. For about USD 200, Tissot will take care of your watch and send it back to you in a working condition. Note that they will probably replace the whole movement. FWIW, Seiko will probably do the same "service" on their 4R/6R movements which are their "workhorses."
