I wouldn't go buying more than 1 or 2 and I would cage them. If you do not have somewhere locally to get cuttings from, then do that. Local soil and water districts sales commonly have them, but your likely too late to get any now.
never ordered from a regular online nursery for bareroots, but they're out there.
Several members buy a bag of potting soil, then poke a bunch of red dogwod twigs in it. I put about 75 in my tree nursery. Mixed a bag of garden soil in my clay, ten used the bag as a weekmat and mulched around it. I reguarly water the young grafted trees in my little 10x10ft spot, so they'll be ok. There's a recent thread about it. I'd amost say panting dogwood or small shrubs is a priority over apple trees, it just the apple trees take a long time to come around.