Selling little Tourmalines - advice please.

[Bron357]

Hi, I hope this is ok to ask.
I am the one with a lot and I mean a lot of small tourmalines (amongst other gems).
I will never have a use for them, but maybe someone else would?
My question, should I just randomly group them up into 5 gems or 10 gems or should I try and get them into groups that a more alike?
I was thinking $10 for 5, they are approx 3 or 4mm square (facetted). However, International Shipping (from Australia) will be $9. Grrrrr.
Here’s a small sample of pink ones (face down).