Debating on getting one.

So i just bought my 1st zip of rosin, and it's so expensive and good quality i don't want to throw it in a banger but im also thinking $400 is a lot to cough up for a rig Ill use one month out of the year. My friend had one he was going to sell me for $400 but I could just get a brand new one for that. Any recommendations or opinions/should I just get one or is there a cheaper alternative