Mine cost a similar price in £, I got a compressor as well, so far I have spent 2 hours bascoating and highlight 3 tanks, so for me it's worth it!
here's were I got my stuff from (UK)
RDG Tools Online ltd AIR BRUSHES AND COMPRESSORS
when you look at the price of the compressor (£40) it's not bad when you consider the cannisters cost £12 for a big one, and the advantage I have found is you can control the pressure on the compressor.