I'm not affiliated with AK - just a very happy customer!
Through today, they are about $4.20 each depending upon what conversion factor you use from AK Direct. It's extremely forgiving and easy to work with as long as your surface is smooth. I've found it to be nowhere near as finicky as Alclad. Don't get me wrong I see some great stuff on here from other modelers using Alclad, but I've never had much luck with the stuff. The smell is comparable with Alclad.
Their "Real Colors" paints are amazing too. It's an acrylic lacquer based product, but I have been able to get great results using them. Compared to paints like MRP or other lacquers the smell is not too bad. Even with a spray booth, other inhabitants in my house would complain about the smell using MRP, but not with Real Colors if you use their thinner. Nobody even knows I'm airbrushing and I don't use the spray booth all the time. You can also use enamel based washes on top of either Xtreme metal or Real Colors and they are unaffected as you weather them. This product range has really helped me get some great results!
If you spend over 200 euro you get free DHL air shipping worldwide, which isn't hard to do with all the paints, weathering supplies, tools, brushes, etc on their website! Takes about 4 business days from Spain to my doorstep in PA.