I have done a Quattro 16 main and jib kit from them. It was the beginning of my sailmaking efforts.

If you want to do it, go for it! The kit is very good and you certainly learn the basics of how sailmaking is really done. The resulting sails might not be perfect (takes time to learn skills), but you will know how to fix them and other sails later on. If you get stuck during the building, you can always get help here or on the sailrite forums. I think they will be good sails at a good price. The skills you learn are costless!

Will these be sails for your Blade?