This plant lives to be an ancient age, and it will produce a large bulbous trunk.
It is not a true palm, but it is in the Agave family. I guess it got the PALM name from the pretty arching foliage.
I have several available for $5.00 EACH.
They are planted in a 2-1/2-inch round pot and range from 5 inches tall o 8 inches tall.
They will tolerate neglect, as long as they are not over-watered.