Processing of photos (collage, retouch) of products for the site

You need to make high-quality artistic photos of products (perfumes) for the site. Photos of products (box + bottle) are, processing, retouching is necessary. You need to pick up the background from the bank of images (within the framework of a given concept) and make a collage: products against a given background. The location of the bottles is the same, different backgrounds (for each flavor).
There are 19 flavors, that is. I need 19 final pictures. Fairplay pay. Offer your cost for this work. Time is critical.
Payment for background images - separately within a given budget