I ordered 14 pairs of apple benchgrafts from Greenmantle over a couple of years. These were almost all varieties that I couldn’t have obtained elsewhere in any size for any price. I bought them in pairs as a kind of insurance. Ram counsels buyers not to plant benchgrafts out into an orchard directly, but I was impatient, so I planted one of each pair in the orchard and the other in a 5-gallon pot as a backup.
As it turned out, every graft was good and every tree was healthy. My few eventual casualties were among the potted trees, and I know that I carelessly overwatered them - which Ram specifically cautions against.
I’d rather start with larger trees, but if I wanted another obscure variety that only Greenmantle offers, I’d order it without hesitation.