You can join HappyCart.co.uk as either a (free) Basic Shopper or as a variety of subscribed Shoppers (Bronze, Silver, Gold).
The subscribed Shoppers has several extra features that you can read more about under "What are the advantages of an upgrade?"
The Basic Shopper is a bit more limited, but still allows you to benefit from the 'at cost' pricing we offer here at HappyCart.co.uk.