After several failed attempts to transplant moss onto my bonsai, I'm turning to you to help me out

What kind of moss is fairly easy to grow and maintain on a PJ Fig, grown predominately indoors (by window-side) in Brisbane climate?
Our local bonsai grower also doesn't sell moss, so I've turned to Ebay and am wondering what everyone thinks of buying seeds or ready-made patches from there? (Scleranthus biflorus, Terrarium Vivarium, parsely moss are the ones on there atm)
Cheers!