When we were recently looking at POS systems we were finding that for anything that was going to help us grow our business and meet our wants was running between 4 and 6K per station. This was including hardware, software, support and training.
When we made a choice we went with a company (TallySoft) who looked at our overall needs and didn't oversell certain items that we didn't need. For example I do purchasing at the store, tradeshows and at home or while I'm traveling. Instead of making me buy a second whole package for store management, they seperated the module that contains the purchase orders and reports and placed that on a laptop so that I can do work off site and then syncronize it back in to update the system. We even talked about a similar set up on a computer at the point of receiving. This will be added in the future as we grow.
All I can say is look for a company who really looks at your needs and is willing to work with you to give you the best system for your needs. Also don't forget the most important part of any system, their support and training.