If you end up having to buy some, I found a place last year where you can buy 4 bundles of 4 shrubs (16 shrubs) for $20, or $1.25 each. These are rooted rather than cuttings, and the roots are excellent. The shrubs themselves are just little whips about a foot tall. This seemed reasonable to me due to the fact that I was seeing cuttings (not rooted) for $2 each. The place is Burgess Seed Company, but I just looked, and they are showing "out of season" right now.
My plans are to get a few of these RODs started in cages and then get my own cuttings to spread them once they start maturing. I can remove the cages from the maturing shrubs once they can withstand the browse pressure and use the cages for starting the cuttings at different locations. I have some places that should be great for RODs once all the sweetgums are killed - and I really do enjoy killing sweetgums - almost as much as killing coyotes.
PS - I wish I had about 500 ROD cuttings to stick in the ground right now. I would like to see how many would make it without protection. If a guy got 25% success, it wouldn't be bad.