I have three free trident maple seedlings that I can't use. If you are in the Dallas area and have a place to grow them in ground or even if you don't and are interested, PM me. Two of the seedlings are already shaped with some movement. These would be ideal for someone just starting out.
Here's a pic of the mother tree in fall colors and the other is a few that I planted in ground last year. I couldn't believe how fast they shot up in a matter of a few weeks. Being in ground in the full sun didn't burn the leaves either. These are the same age as the free ones and at the time were 1 1/2 yrs old.