I believe there's plenty at my shop 414 smp1 , it's cheaper then what you are offering , i'm too lazy to move.
I would've offered you access to my wool farm, but it appears that over 300 sheep have vanished since the update.
I think I have about a stack of silver wool at my shop at 1079, SMP1. It's 5 blocks for 2r. I love public sheep farms...