Hi,
It’s a sticky in the introduction section, but no problem 
: An Introduction to Mones: Names, Size, Strength, Use, Effects & Duration
To choose one, you check what they are supposed to do and compare that to your goals. Match? Then you’ve possibly found one.
The prices are in the shop for each and every product. For shipping costs just go to “checkout” and see the preview of costs including, and specifically given, shipping.
If you want to qualify for the gc, please tell us details about personality, aims, environments you are around, the general vibe, your preferences and so on
Peace