That's a good observation. Chinavasion has good products and offers fast shipment. There's no wonder why a lot of etailers use their service and list their products. If you search 'Chinavasion' in this forum, you will find a lot of other posts from other members about them. You might want to check them out.
As an eBay seller, your big advantage is your ability to add a Unique Selling Position to your product listing. So if you decide to use drop shipping or Chinavasion, put in a little more effort in making your listing unique-may it be by posting a different description (and not just copying and pasting from the supplier site-it's not attractive) or photos or coming up with your own strategies in making your products sell and compete like auctioning them at a low starting price of $0.99 to attract bidders, giving out freebies or bonuses.
If you're still starting out, maybe it's better to stay away from electronics (and the very stiff competition) or sell accessories instead.
It's great to have you on board! Looking forward to more posts from you. :)