You can also check out Gold Pay dirt Reviews on YouTube, he has video reviews on most of the popular pay dirt sites and he breaks down what type of gold can be expected as well as an average return on investment.

If you look in the Gold Prospectors magazine, there are a few pay dirt advertisers that have been very loyal to the GPAA LDMA members. Also, if you purchase a dirt bag from GPAA, I can tell you that there is at least 8 grains of gold in each bag.

I will preface this by saying that I have not purchased from anyone.  Have heard good things about the quality and quanity of stuff from Randy Witham (here on the forum).  Have not heard anything about the bags the GPAA had/have available. GPAA used to sell bags at the shows (or there facilitator did) and heard good things about that, but don't know availability  of that line anymore.  Those first  two would be worth checking with off the top of my head.  Randy's availability can be spotty.

The very best part of it is that you can toss it all back in and do it again and again to work on the panning skills, after working it in a tub, and whatever you find on the claims can stay in the vials, for show material.