Rules state that you and I make an agreement on price and product, and once an agreement has been met, you will need to post in the Looking to buy SOLD forum so that I can respond to it and buy through it.
However, not ready for an agreement here. For $15 including shipping, how much U. sandersonii are we talking about and are you shipping it potted?
The price seems high, but perhaps this is a great deal with a bit more information on what I would be getting from you.
Still looking for all three in case anyone is wondering. I had some good offers but looking for someone with all three available to make it easy on shipping. If I can't get all three, the only one I am willing to pay for individually at this point is just U. longifolia