How bad is it? It's pretty good for a slasher flick.
Should you see it? It's worth a look.
There apparently was a Chainsaw Sally television series and an animated version, but this film is the only one I've seen. It's an homage (rather than blatant rip-off) of The Texas Chainsaw Massacre and, to a lesser extent, H. G. Lewis' films. Sally is a librarian with a cross-dressing brother who takes it upon herself to right the wrongs of her small town's small-mindedness, by becoming a serial killer who takes her inspiration from horror movies. The gore and violence are fairly well done, though the low budget shows and, remarkable for the genre, the characters are interesting and developed.