the smartest thing that you can do, is give out a vouch copy to trusted members.
As you said it's only $0.65.
1 vouch can boom your business, denying a vouch however will have a lot of people ignore your thread.
Just some friendly advice.
On the other hand, though, if we ask someone to give away their product for free, that's effectively money out of their pocket. I do acknowledge that it can be good for advertising, but I may disagree that people should feel like they need to give away free products in order to sell.
I prefer the old fashioned way of things, I guess. So, sign me up for some keys and I'll leave a review for ya! I'll purchase three random keys, please,
Proceed. Let me know where to send the bitcoins.
Celroc A