Fix Photos

I have some 40-50 products and a total of 200-300 photos I took myself with a digital camera on a white background (not a studio though).
Each product has 2-5 photos.
I need a professional who is good with photoshop (or other similar software) to work on the existing photos and make them look good for my website.
Photos mostly need cropping and then work on the background.
Please give me a fixed price per image.
I attach two images of the same product; one image is from a studio, the other one is from me, in which case we should try and do it as good as we can.

regards
YC