Welcome to SaleHoo :)
Don't let this discourage you. There are other things you have to factor into the equation. For one, the volume of your orders will play a big role. Remember, the more volume you order from a supplier the higher your profit margin can get. Most suppliers are generally willing to offer additional discounts for volume purchases. Although, this is something you should not expect if you are using wholesale drop shipping.
From what I know there is really no written standard on the quality of feeds you can expect from a supplier. You can expect anything and everything even if you are paying a great price for such services.
Although the idea of listing products straight from the drop shipperâ€™s site to your auctions/store sounds appealing, we do not recommend it. The reason being that you have absolutely no way of distinguishing yourself from the hundreds of other sellers using the same tool to sell the same products!
If your titles are the same, your pictures are the same, your description is the same, the shipping and service is the same â€“ what is your competitive advantage? Where is your unique selling point? You might get a couple of sales if you are lucky, but itâ€™s not a workable model for building an ongoing profitable venture.
I understand that your upload hundreds of products at a time, but what's the use of uploading so many products when you don't even have one that's decent enough to convince buyers to buy from you.
It will be time consuming to re-word some of the descriptions, but I'm pretty sure it will be worth your while. Especially once sales start pouring in :)
Hope this helps...Cheers! :)