ok so sales definetly dont depend on the size of your files.in my experience i have made the biggest sales on small files like 150 mb.rg most of the 3 months.upload files bigger then 500mb is just pure waste of time.atleast for me.
exta also supports wmz and mastercard not only visa.btw i have made 2 years premium sale on exta on 127,5 mb file so thats all to the file size vs sale.
you have two groups of users first group are people who want buy no matter what a second are people who will never buy coz they dont care about long waiting times or dont have options how to buy.
rg/cheater - ok some of your genius teachers and uploaders explain how you can get such stats if rg dont cheats.
2,1,3,0,2,0,3 one week and another week 0,0,0,0,0,0,0 with same quality content