I like the concept of an elite shop, here's a couple of ideas.
The shop should be very exclusive, ie it should not look like a shop from the outside and the only way you can find it is iether by just stumbling across it, or by being told it's location by an NPC who you have befriended and who thinks you have 'the right stuff' to be a customer.
It should have a doorman in an antechamber who will not let you enter unless you demonstrate the great weight of your gold-purse.
Once inside you should be able to pick from amongst several superb off the peg armour/weapons/items, OR for those who are truly rolling in cash, you should be able to order custom bespoke armour/weapons/items. Which will have whatever mix of stats, charms and augmentations you want (and can afford).
Naturaly in such a shop the salesman is fawnyer than a field of deer.
