You could also put an ISO thread on the buy sell trade forum here on SCS.. Just put that you are in search of (ISO) Magnolia stamps. I bought 7 from a wonderful lady here just last week.
I have also purchased from Diane (
www.magnoliastamps.us) I received them VERY quickly and she was wonderful to deal with. One of the stamps I ordered and paid for was sold out. She deducted the price of the stamps and still gave me the free shipping for the over $100 order even though it was now lower. I really appreciated that.