I use this service and am very happy with it. They offer a monthly subscription. Those that join later are blessed with a larger library than those who signed up earlier but since he is adding several new photo sets each month I consider the money well spent. Initially you will have to file/save each image individually but after 3 months you qualify for the bonus section and can download the zips. They were recently hit by PayPal regarding them as an adult site because they show nude pictures (duh!) and have had to change their method of payment. I had some issues with the changeover. These were handled courteously and in a timely manner by the site owner. Problems happen, its how a company handles them that is important.

I am completely satisfied with www.3d.sk and highly recommend it. By way of example here is a model I created then textured using photos from that library.