1. does it work and is the electric wiring in good condition?
2. can you get bobbins (already asked)
3. do you have the space
4. do you really want/need it?
5. can you afford it without doing without something more important?
6. does it have a cabinet or carrying case? ( or will you have to drag it in and out in order to use it?)
if the answer is yes, then get it. if any answer is no, then don't.
if you have a working machine and want another one for backup and can easily afford one and the other answers are yes, then why not? if you already have a backup, then maybe not. you don't sound very excited about it. not everyone is. besides, they show up with some regularity.