I have noticed that although I am having more and more sales each month at iStockphoto, my average royalty per month has been consistently dropping.

For example, here are my last six months at iStockphoto:

Month	Avg Royalty
March	0.500
April	0.491
May	0.469
June	0.453
July	0.439
August	0.399

Please note, that for someone with a 6 or 8 MP camera, if sales were equal between all of the sizes (Small, Medium, and Large), then the average royalty would come out to 60 cents.� For example, if you had (10) .20 cent sales, (10) .60 cent sales, and (10) 1.00 sales, then the average royalty would by 60 cents.

So it seems that the 20 cent sales are becoming more and more popular over time.

Anyone else seeing this?

P.S.: Please don't include extended licenses in your averages, as they obviously throw the figures way out of whack.

Mine have remained at about 59 cents since the price changes. I am not exclusive with Istock

No such tendency here:

Jan: 0,48
Feb: 0,54
Mar: 0,50
Apr: 0,52
May: 0,48
Jun: 0,56
Jul: 0,56
Aug: 0,50
Sep: 0,50

Overall average: 0,52

I think maybe the type of pictures you sell will have something to say. For instance, while textures aren't the hottest subject around, I believe they're fairly more used by print designers rather than web site owners, so they'll want them in larger sizes. Other shots on the other hand, will be more used on web sites.

So, maybe the pics you have uploaded in the beginning of the year were more used in print.