Hi Grant, I'm presuming you are in the US? we sell all the parts separately since a Cpl of months, although Dealers may offer them as a set. For windsurfing, there is anyway only one fuselage and back wing (215) with the choice of a 90cm or 75cm mast. Yes, the new 1000 is quite high aspect, the 1500 slightly less so:
there are some studio shots there so you can see the outlines.
To check retail pricing you would need to check with your local retailer, to see if they sell them as sets only, or just the front wings - normally they should be able to do both, depending on availability. Good luck there!