Hi - the tip is referring to the different types of eBay stores available: Basic, Featured and Anchor. It isn't anything to do with wholesalers etc.
The reason we make this suggestion regarding eBay stores is that a Basic is only $15.95/month, while Featured is $49.95 and Anchor is $499.95.
Buyers do tend to be a bit hesitant about purchasing from sellers with feedback under 100-200, so until you build your feedback up a bit, you'll probably find your fees outweigh your sales with anything other than a Basic store.
Hope that makes sense :)
PS. Dropshippers are generally fine with working with newbies as you pay for items as you sell them - therefore the risk to them is very small.