I would definitely prefer seeing the stuff I am buying, especially if it is something like a headset. However, you need to maintain sufficient customer traffic to keep the shop commercially viable. It may be either a good way of selling the stuff everyone else has (e.g. for headsets, a noise booth for testing + many different models and brands kept in stock), or you may also create your own line of goods, e.g. good comfortable clothing for pilots. A friend of mine, an old test pilot, is married to a clothing designer, and we did once speak about creating a new brand, but the idea died for lack of a sales network. Want to revive it?
