I used to sell Tongkat Ali and my stuff was from TongkatAli.org. It looks like one or two people sell the stuff from TongkatAli.org on eBay and use their own labels but it’s the same stuff I sold. When I ran out, I bought there stuff. I believe its around $30 for a bottle now.
The 50:1 extract is plenty. You don’t need the 100:1 or the 200:1 extract. If you contact them (TongkatAli.org) and ask them about the ratio, the 200:1 extract isn’t 4 times as strong and costs too much. I forgot the process, but I believe it might be 2.5 times stronger. Not worth the money, IMO. If you were going to use the 200:1 extract for anything, it would be used to mix with other powders or make your own supplement.
I’ve tried the 1:200 and did nothing for me except headaches. I’ve gone back to the 1:50 now and on the fourth day I’ve built up to 1.2gs and its fine, my libido is up but more mentally then physically at the moment. As in I have constant sexual thoughts. I bought mine from a UK supplier from ebay and its the same as the TA.org, labels etc.