what price should I ask for it?

Hmm... well, when those things were in shop still, they used to go, at highest, for 50 mil. So, maybe 50 mil? :)

but on "overall average price" says 37m :/ I will try to ask 50m,thanks

I would try selling @ 25-30mill you might get a buyer faster.

I bought one for 20mil awhile ago.

Keep in mind that Hustler might decide to sell them at 250 CSC, so people aren't likely to buy at 50mil.

I would try for around 25 mill, you might get a buyer.