kansascats wrote:
I have an old Craftsman 1/2 hp garage door opener.

The model is 139.53615SR, mfg 11/91

the remotes are worn out

Is there a place to get a cheap remote - need 2?

or time to buy a new unit?

I put the model # in an Ebay search, and also searched Amazon.
There are a bunch of replacement remotes on Ebay, a couple on Amazon.
Most are under $20.