If you look around you will usually find some a fair bit cheaper. Maybe not at an LFS but definately not uncared for either.
They have some crackers in, which are stunning, but sometimes their prices are very OTT imo. But still, it's probably the best LFS around that sells such a wide range of fish. I loved the Mbu Puffer they had a few weeks back. Totally amazing.
Shame you didn't get to see the huge Flowerhorn they had in also... First time i had ever seen a 'proper one' in real life and was in awe of it!