I get that and totally understand - quite a few folks suggested Boston Gear. I had made inquires to them and they were very nice - I got a personal email from them that explained the small gear / one off type work wasn't something they could do as it was time and cost prohibitive.Opsoff1 no matter what some of these guys are saying, these prices are outrageous. This is just an asshole way of saying we don't want the job. That said there is a lot of work to making a gear so expect to pay. if you can make the blank EG will cut it for you at a fair price.
Do you have a milling machine? As folks are saying you can cut a gear if you do. Especially since you have a good sample. Sometimes gears are cut at non-standard PDs but the sample will confirm that, and I'll bet your gear is standard.
I do have a milling machine and I do have another gear - same exact function, just from an earlier gearbox - it has a different shaft hole diameter and a keyway. It is in great condition. I am torn between modifying that one (and basically making that gear box inop) and continuing a search for a replacement or find a gear maker that can cut one.
Lot of great advice and leads to solve this small problem.