Point of Sale System Bleg

I just bought a company with a few seasonal gift shops and camp stores but they have this expensive kludgy NCR Point of sale system they use.  It reminds me of doing business with IBM in the 80's.   Apparently every piece of hardware costs a fortune -- I kid you not an add-on credit card chip reader was priced at $1000 -- and they have to have their own server somewhere running software rather than a cloud solution.

I want a simple cloud-based POS system that might be appropriate to a 3000-sq-ft store with a half million in sales a year.  Anyone have good experience with one.  Hit the contact button or email me at coyote - at - this blogs name dot com.   Needs to be more capable than square, maybe several hundreds sku's, but not some mainframe system that might have been developed for Sears.  I am not a merchandising / retail guy at heart so I don't even know where to start.