With the prices for Vector work being so low these days, I am choosing not to put vector files for sale, unless the royalties are well enough. I think there is very little lack of understanding how much time it takes to create good vector artwork. For now I will sell raster versions of my illustrations in iStock, I just can't give away the source or vector versions as low as an image. There is a great unbalance in pricing out there. This is becoming the same with HD video/animations...the royalties are becoming so low that the time and effort that goes into them is greater than the return. It's just sad to see the industry devalue its own commodity.