Hi Lucy, With any dropshipper you will have to set up some type of account in order to view and sell their products. Other wise they would have no way of getting paid for the products that you sell..You will have to do this with any vendor that you are going to purchase products from...
However, I would say to never 'sign up' with any dropshipper who is going to charge you a 'fee' to be a member of their site..Alot of dropshippers you see listed on the web try to get you to 'sign-up' and be a member. This is how they actually make money..Don't do it..you wouldn't pay a fee to shop and buy products at your local grocery store would you?
A true dropshipper or wholesaler will need you to open an account with them, but won't ask you to pay a fee to sign up...Profit margins on dropshipping item are slim at best, and paying any kind of fee will eat up what's left of that small margin...