Hello,
I typically don’t drain. I put them on antibiotics and pain medications and an ecollar and go from there. They will usually heal with time and antibiotics. Call your vet ask for help. And make sure the rabies vaccine is up to date.

The cost depends…. what is the underlying cause of the abscess. That will need to be taken care of as well. You should check with your vet, find out why it happened in the first place. Get that and the abscess taken care of and then there will be antibiotics to consider as well. I’d make a phone call tomorrow…. good luck!