John B is right.
Don't base your decision solely on saving a couple of $$$,
There's an enormous amount to be said for product knowledge and after sales service.
It's only a personal thing but I try to avoid purchasing from non astro folk. Suppliers who are passionate astronomers themselves will be the best to deal with, IMO.
I won't name names but I can recall trying to buy a $2000+ scope and getting bundled off the phone by the owner four times before I gave up. He was always "too busy to talk at the moment"!!!!
There was also an occasion where I had my credit card in my hand and tried to buy a collection of items and was hurried off the phone and told he'd call back. He didn't. Twice!
You know who I'm talking about.