One thing you will need to understand that working with non-professional or poor quality photos with low resolution is extremely time consuming. Aside from just doing the ghost mannequin editing for example, the photo editing service provider will have to retouch the photo adjusting brightness/contrast, work on color correction, edit the photos to fix any outline that is not correct and aligned with the other part of the dress, etc.
All these extra edits are time consuming. In some cases, doing the ghost mannequin retouching takes more time than simple ghost mannequin editing. Cost of edit therefore goes by. In some cases the edits cost double or even triple compared to the edit with a professionally shot photo.
If you are a clothing store business owner and working with ghost mannequin photography on a regular basis, you just calculate the additional cost of the edits and see it is justified for you to do your ghost mannequin photography this way. If you have 200 new products every other week for example, that’s 2 shots per product meaning 400 photos every other week. 800 photos every month equaling to 960 photos per year.
Of course some apparel business owners will have less while some may even have 2, 5 or even 10+ times more pictures per year that will need to be edited. If you calculate the additional cost of ghost mannequin editing, it might just be justified to setup a studio for the product photo shoot.