You really need to show your catalog without having to buy a membership and make shipping clear. I am interested but I am not paying 70 dollars US to have a look. Having a dual pricing option is a good idea. That way I can buy some samples at the higher price and then switch to the membership if it seems worthwhile.
We're experimenting with this, 2 options:
1. No membership, but higher prices (we may try this in the near future)
2. Membership with ultra low prices on clothing
With option 2 you actually end up saving more in the long run and its the same result.
Membership helps to run the business while passing all the cost savings to you, that's the main idea about this business model, but definitely open to experimentation.