Big part of costs is shipping, I got fairly decent price about ferry to Stockholm, so I picked the carbon mast myself from Västervik. All in all total price was less than what I payed from fully fitted superwing. The T mast chopped to 8.5 m was about 13.7 kg's while superwing was 21.8 kg's, so the clear winner is carbon (no righting aids needed ;)). It would be interesting to know what the chopped down fitted alu T-mast weights... Please note that price was low because that mast has been floating around their workshop (it didn't measure into T-rule), also currency exchange rate favored me a bit.

Only drawback is that my Blade is not F16 class legal anymore, the mast foot is about 1 cm's too high (7.5 cm allowed from beam to mast, my mast sits at 8.5 cm from beam). I could of course make new mast foot fairly easy if I would participate to a F16 event, but I probably would try to change the rule first (I'm not member though, so I don't have that option). Anyway I don't think that there is going to be any F16 class action happening near me next summer, so I probably wont bother.