I wouldn’t be too hard on fish stores that don’t quarantine fish. I heard that the profit margin on fish is pretty small, and gets even smaller with the cost of the extra medication and food from the quarantine. I’ve even heard that if a store doesn’t sell a fish within 10 days of its arrival than it starts costing the store more than the profit they will make on it... not to mention the room an entire quarantine system would take up in a store or aquaculture facility.
That being said, I love TSA. Knowledgeable staff and a overall great store (Very Clean). The prices are their fish are pretty standard. However, there prices on some of their coral is a lot higher than other stores in the area.