Please help me out on this one i dropped yesterday. Maybe some one had a similar piece (like q9 and 20/20 same profession) sold and wanna tell price or maybe you are a collector and can say what you are up to willing to pay (even tho that would be a tough struggle to say the real number an not low ball when self interessted ^^)
Thanks and best regards to all 
best to put it for sale and let it run for a week~
I'd suppose it could get 20-50e but much speculative - I´'d go with Internetusers advice 
Agree with above, posting for sale is best bet.
I've had similar q9 air offhand dual mods, but with only a single 20% fire mod. There was some interest in those items, but maybe 5-15e offers. I know that's not quite the same as having dual 20/20 fire, but maybe some type of reference for the 20-50e amount.
