We got ours from Food Bazaar. They are all $59.99 flat - no matter the size, but they say all their trees are 6-7 ft. We checked Ultima, but they were a bit too pricey for our budget so we went with FB. It's a lot less frill, they don't cut the tree for you, but if you've got a saw at home this is pretty easy to do yourself. And you pretty much just pick the tree yourself as well (can't see it opened or anything), so it's the luck of the draw. We spent time to inspect each tree in the bunch (as best we could since they're tied up), but got really lucky and brought home a giant! A bit too big honestly...
So far it's great, hopefully it remains healthy/fresh (can't speak for the longevity, it's our first time getting it from Food Bazaar, we got one from the Canadians that set up shop on Northern Blvd last year). If you're trying to get a large tree on a budget, Food Bazaar is worth checking out. As far as I could tell, other than the service, the trees weren't that different from the guys outside Ultima.