10.9 in fact, it's been running pretty much 24x7 on my main rig and less frequently on the laptop.
To be honest I haven't been looking at the prices, when I saw it hovering at $2 it was depressing and I gave up watching it
I still don't know where the best place is to trade them, i don't really understand how some of these sites work. Some you seem to make an offer and wait for an acceptance, which seems straightforward, is that what you did?