For POD covers I provide the front, back and spine to CreateSpace specifications. This POD cover is a 300 dpi high resolution image in PDF format. I do not get involved with figuring out sizing. You must let me know the size for your book and the number of pages.
My fee is $125.00 for the POD cover.
The 3D image I create allows your ebook to look like a paperback standing upright on a table. There appears to be a slight curve in the cover and a reflection of the cover beneath it. This e-book cover design looks fantastic on a personal website.
The cost of the additional image of your ebook cover in 3D is only $15.00.