Definitely get a few more quotes before making a decision. COREtec pricing can vary quite a bit between authorized dealers, and you may be able to find significantly better pricing than what's advertised online or even locally.
I'd also compare more than just the price per square foot. Ask about freight costs, what happens if material arrives damaged, return policies, and warranty coverage. Shipping flooring isn't necessarily something to be afraid of, but you definitely want to know how the retailer handles a damaged pallet before placing the order.