Most of the places I have checked are expensive too (Northern Tool, Eastwood Company, etc). It's just the going rate and the price of the equipment.
There are cheaper models on amazon (including all in ones), but they're from makers I've never heard of. Every once in a while you will run across one that is the same model as the more expensive ones(same cabinet, same specs, same dimensions)but goes under the original factory name (Think they are made in Italy).
Whenever I look for Cheaper Tools, I check harbor freight... but even then, they'r not very cheap. Again, its the rate and price of the equipment. From what I've seen.