For ipods/electronics we suggest: mkenterprise.com
For clothing like RL etc: Link hidden: Login to view
Also if you want to make bigger margins (but you will get mixed stocks) have a look on liquidation.com as you can pickup some extremely cheap lots of products here and this is one of the best ways to make money.
Just FYI the best way to continue and become success is to always be prepared to change items you sell to suit a) what people want and b) what is giving the best margins.
Hope this helps you out and let us know if you need more help at all!