Basically, if you are to compare the best stock photos including price and number of downloads a day here’s an easy way to do it.
{Why are you still paying for them if they are Royalty Free?}
1. Royalty Free means license free. If you make one single purchase of a photo you don’t have to pay for a license to its use ever again. It’s just one single payment .
2. If the photo isn’t Royalty Free and you still use it without paying for its licence… then you’re in trouble. Just cross your finger they will never find out.
{In each of these websites, another great resource are illustrations. Let’s say you’re looking for biology illustrations. Just type BIOLOGY in the search field, select Illustrations or Vectors and you’ll frind great resource to your courses}
http://www.istockphoto.com/index.php [$108/month for 10 imgs/day - $295/month for 30 credits/day - $561/mo for 60 credits/day]
http://www.123rf.com/ [$ 749/year - $0.41/image - 1825 Images]
http://www.stockxpert.com/ [$ 999.95/year – unlimited]
http://www.shutterstock.com/ (6.6mi) [$249/mo or $ 709 / 3 mos for 25-a-day]
http://us.fotolia.com/ (5mi) [$249 / mo per 25 downloads/day]