Ok... First off - the owners of the store was rather nice. Very helpful.
Here is what I saw... a good collection of Birkins... but none of them (appeared) to be brand new. If the bags did get a lot of loving it was over a long period of time... as they all looked at least 5 years old...
Pricing... the 35's around the £5k mark. Thats £1,000 premium off the brand new prices, but you get the colour you like and instant gratification.
The crocks are all behind a glass cabinet - even the 30 were around that price too. Saw at least one black, one white and others were the shade of brown. From what I understand, they are all sold on consignment.
I think they would do better if they presented the bags better, or even spend the money to have the bag spruced up or restored...