you can get them new or 2nd hand, there are no moving parts so they are very reliable. there are 3 looms, main, injector and ignition. im not sure how they are sold these days since i got my ultimate 2nd hand. and the looms are all universal, however you can get plug and play things so you dont have to chop up the factory loom, you cut up the 'extension'. then comes the tuning
but the best thing is if you plug it in and zero all the settings, you can drive it like normal till you can afford to get it to the tuners........