There are lots of great deals on quality enlargers. Spend some time looking at ebay to get a feel for what is out there and take your time. Make sure you get a top quality lens which is more important than the enlarger itself. Keep an eye our for local online sales of other darkroom equipment like trays, etc. There are still people dumping this stuff and it is usually dirt-cheap.
I just looked at craigslist in Omaha and found a Saunders enlarger for $100 (and it comes with a bunch of other darkroom stuff). It will be neither difficult nor expensive to get rolling.