The people at fotolia gave me a free 30-day trial subscription (5 images per day) to their site so I could try it out. The site offers thousands, no millions of royalty free images. The royalty-free license allows you to use images in your projects without limitations on time, the number of copies printed, or geographical location of use.
Once you're ready to buy images, decide what kind of plan you want. The per-image cost is higher with the Pay-As-You-Go plan, but I think it's better, unless you need a lot of images. The subscription I had was for 5 images a day, and that meant I had to go back every single day and download those 5 images, and then I had to wait until my time re-set to the next day - and go back again to download another 5 images. I found that I did not really need that many images, and some days - even though I meant to go and download my 5 images - I just didn't get there. They have a new monthly subscription plan that might solve that problem since they give you the whole month to download the files you want (you choose the number), and if you don't download them, they roll over to the next month.
I did download several images during my month's subscription. I just haven't used many of them. I am going to keep adding images to my lightbox - because there are some great images there - and if/when I have a real need for a great royalty free image, I'll just buy some credits and do the Pay-As-You-Go thing.
If you're looking for images, be sure to check out fotolia. If you'd like to sell some images, you can do that too.
