I agree $2000 is not something the OP will get.
Here in the UK P90 Aids are being sold for around £1000 to £1295 which is around $1500.
I think the OP is selling them because her son now has Cochlear Implants so the Aids are useless for him.
Some people get more money by donating them and getting some sort of tax back. I don’t live in the US. It is something i have only read.