we looked through the August revs stats, and globally the results are cool. The beginning of the month was very good, second part - a little slowdown. but generally-the performance increased.
what we can suggest: for a better insight, group your stats 'by Member'. this way you'll know, if the purchases were made by same or different members; see the user spendings graph, etc.
for even deeper member behaviour check, let's do this: contact me, we'll investigate it from our side (by incarnating) - if the users disappear/return/still have tokens for spend. so we'll have the whole picture ! and be able to draw conclusions