normthompson.com has the same Pearl Oyster Mushroom Kit that is shown on
wine.woot.com ($11.99 plus $5 shipping) for only $5.99. Plus there is a
coupon code for free shipping after $19.
Free shipping code is 13096
Link: http://www.normthompson.com/jump.jsp?itemID=18194&itemType=PROD
Looks like the kits can be used two times, so if you get 4 kits (for free
shipping) you would be able to do 8 harvests.