It can't do anything but mine bitcoins.
Right now, I'd say a used batch 2 Avalon miner is worth maybe about 120 coins. Plus or minus 20 coins because it's hard to say what is going to happen with difficulty in the near term.
Hard to say what is going to happen with difficulty ? come on we all know what is happening as I write this !
Total network is on his highest ever as I'm typing : Network total 244.415 Thash/s
Difficulty 21335329
Estimated 24008458 in 801 blks
It is going to skyrocket for sure !