I friend of mine has found himself with about 50 rolls of 198gsm 3k plain weave carbon prepreg cloth. It is due to expire soon, but as long as you’re not making a plane you’ll be fine. The rolls are valued at about $5000, he is willing to sell them for much much less.
It is in Melbourne, Australasia, so you’ll need to pick it up or arrange frozen shipping.
If you are keen PM me.