Where do you find the best place to get plant stock is? Personally I've gotten quite a bit from Ebay, but I was just wondering if there were other good places? The best I know of so far (besides Ebay) is FoodForestFarm.com from the guys who wrote "Paradise Lot". I'm in the USA, so take that into consideration.
We use our local nurseries, that way we can put our hands and eyes on every tree or plant we purchase. We get our seeds from specialty seed banks so we have the best, organic seed to start with then we save our own seeds every year so we can end up with land race varieties that do best on our land. We don't buy anything from Ebay (have had bad experiences there so we now avoid those problems)
The reason we have used Ebay is because they have plants we're looking for. Unfortunately here in Rural Michigan, nobody grows anything but flowers and veggies. Our closest resource for perennial edibles is Oikos Tree Crops, which I plan on visiting this coming spring. That's why we're trying to start a permaculture nursery of our own, so we can expand the availability.
Good Luck! That sounds like a great plan and should end up a good business. We are lucky in that Arkansas has a lot of fruit orchards and most of the nurseries here either carry lots of variety or they will order what we want that they don't carry normally.
I highly recommend Raintree Nursery in Washington for things you need to mail order. They had a great selection of material that was otherwise hard to find, and I can't say enough about their shipping. This spring I ordered ten saskatoons, three pawpaws and two lingonberries. Pawpaws were leafed out, not shipped dormant, but where I was expecting dormant bare-root plants I received potted plants packaged with tender care in enough shredded newspaper and plastic holding in the moisture in the pots that a package of five plants (pawpaws and lingonberries) had only one bent leaf rib. They are in fantastic shape and growing at a rate that I can actually watch.