How to provide a large library of royalty free images to your customers?

Hey guys,

As we will be providing a number of products to our customers that will allow them to build their own website, we would also like to include an image library of 10,000 + images for them to use on their website. These images would need to come under some form of license and be royalty free.

I have contacted a few of the larger sites such as Getty Images, and they are willing to provide the images to us for a cut of the revenue per customer. They were after a 30% cut, at a minimum payout of 12k per year. We are not able to afford this and was wondering if anyone else has done this before and how they went about doing it without such high costs.

Any tips/help would be greatly appreciated!