hey there!
First, I’d go read this thread An Introduction to Mones; Names, Size, Strength, Use, Effects & Length of it’s pretty informative.
You might find some companies doing free samples but you are better off sticking to https://a314.com/ and buying togo bottles of the ones that interest you.
To get a good idea of androtics’ products read The Snook’s big book o’ pheros for rookies