mate it aint worth selling, price up a new LE bladder if under $100 get it and do a double cross stitch and a few more sewing technics on the the kite, then would be all good. Your repair depends all on the new bladder. if to much just keep it for newer kite repairs but do not bin. lots of people will pay money for the material and the other bladders. I am sure you will see a forum post or find and old one that someone would benifit buy your wasted kite.
However, you said good in light winds you must be pretty small to say this is a light wind kite...

Then the

is well, is it worth repairing. if this is your light wind kite a whole of 12mt.....mmmmmmmmmm