My royalty-free images are available in my portfolios at several sources on the internet. Prices vary, and no single portfolio contains all my images, so you may want to shop around.

Stockxpert
Fotolia
Shutterstock has the largest portfolio of my images. However, you cannot buy the single images (i.e. 'per image') there. Shutterstock sells subscriptions, which allow you to download many images for one price.

---