IF i make extra banded armor can i sell it?

[Baler]

As others have said, yes there still are people who buy it. Usually I see people advertise full sets of various sizes.

AC is good on p99, the staff have put in a lot of work to make sure AC is as classic as possible. So the physical damage mitigation from armor class is decent.

Banded offers a cheap source of good AC. At lower levels players usually fight warrior npc's. So the AC goes a long way at those early levels.
On green, banded will be in HUGE demand.