Your project is for eBay and combining of 20 to 30 images in one.
Well, i am teaching Photoshop since five years, i have the skills in removing background, retouching, layer styles and blending options and many more. I have completed different editing projects but frankly i didn't do it for eBay, i have the skills and command over Photoshop and i can do your work better. You can try me first as a sample, judge me and my work and then decide it.
I will be online with you continuously and will show you each and every step while doing your work.
If you have further questions, let me know.
Regards.
Imran.