i don’t know about how much they cost nowadays but i had one (actually still have it but it’s sort of loaned out at the moment)
i found it to be a solid unit. it does some very important proc amp type stuff in addition to being a pretty powerful tbc. so i ended up bringing it to some live shows despite the not-very-portable rack mount form factor. it also can be quite helpful in a feedback loop.
as for using them in glitch art, i think there is some info somewhere on this forum already about how a TBC can help you stabilize a glitched-out video signal, so i won’t go too in depth about that. but also, it has external sync input, and so has allowed me to genlock a signal to another signal so i could mix between them with one of the older video mixers that doesn’t have an internal frame sync – or, to be able to genlock a signal to feed it into the external camera input on an mx50 video mixer (which normally you would need to use a camera with genlock for).