If you want the Aunt Martha transfer patterns at a bargain price, go to:
http://www.colonialpatterns.com/
The packages (envelopes) of patterns are only $1.15, and the books of patterns by theme (dogs, cats, butterflies, etc.) are $4.00.
If you want pre-stamped blocks, quilt tops, or other items, go to:
http://www.jdneedleart.com/
I've ordered from both sites without having problems. Both sites also have embroidery supplies, such as needles, thread, hoops, etc.