Chinavasion is not real wholesaler they are middlemen also.dhgate,made inching,lightinthebox,chinazrh all of these China based so called drop ship companies all of them are middleman sourced electronics from China wholesale market.
Trust me I have tried all of them you guys can think of.you can make money on every website mentioned before.its depends how good you are marketing the products on your website or eBay whatever.
The profit margin is low the time and effort you spend to list the item your store,for me it's not worth it.
If you are a serious about being in retail business you guys should take few trips to Asian country's like Thailand china and Vietnam nam where you can buy in bulk.this way you can make some money and create a good customer base.
Hope this info helped you in anyway.
(***Edited by Moderator***)
Good luck