When I saw all those threads and reviews about wholesaling it really confused me. Some said never to buy lists of wholesalers, some said never to use wholesale listing sites, some said never to deal with the chinese and some said wholesaling is a waste of time.
It would have been much easier at the time if someone had explained everything to me, but if they had, I probably wouldn't have learned as much as I have from searching myself.
I will tell you though that there is a huge markup for practically everything on ebay. Most of the stuff is bought from wholesalers across the world, whether it be Electricals, T-Shirts, Belts, Textiles...etc
In my opinion, there is no point in buying wholesale lists since there is as much a chance finding a good supplier through google.
Usually, the best wholesale sites aren't the first ones that come up on google, sometimes the best can be on the 4th, 5th or 6th pages.
Another key factor in finding a good supplier is the ability to make a relevant search on google, even substituting "supplier" to "distributor" can make a big difference.
Once you've found a supplier, you'll need to make sure they aren't scamsters. I will always cross-reference their site with this
one. If the supplier comes up on the list, don't use them.
However, even if the supplier's site doesn't come up, I will still phone them to verify their prices and all the particulars (VAT/Import Charges/Shipping...etc).
Also, I will search the company on google. Sometimes there are reviews on them and I always read these.
Look around, there may be cheaper suppliers and it may not be wise to take the first offer that comes to you.
Good Luck.