There's a maths conference coming up and the whole thing amounts to about $1K, which is not the problem. I'm not going to be presenting, and I'm just going to be attending. I am planning to go next year to present a project I've currently started. Is it worth going this year?
Academic conferences are pretty good to make networking between the participants. If you are looking for some collaboration into your project, maybe it could be a great idea to attend.