I'd happily pay more for a skin - $20, even $25, just give me a chance to trial it for 15 minutes to see if I like it. I realize that's not a very realistic request, but like it or not, not having the opportunity to run a theme through a few paces is a barrier to selling product - at least to this consumer.
Unfortunately there is no way to do a Trial Master Skin MeSleeper, and also unfortunate is that in a lot of cases people are dishonest and wouldn't pay for it anyway. I have seen/had skins put up for sale as a Master Skin, and the very same day show up on WAREZ sites, people giving the skins away to their friends, modifying the skin and putting it up for sale on another site as their own, you name it. Sad, but true, and there is nothing an author can do about it in the end. If one must rely on these sales as part of a way to make a living, they get totally screwed. 
But if you find an authors work you like, you can be pretty sure you'll their new ones just from the screenshot provided. 
