I build things like this in similarly low quantity - you are probably looking at a grand or two toaster kit there, 95% of which is the custom parts - if it was done locally. The time for someone else to do it is what your paying for. It can be done exceptionally cheap in dollars if YOU do it, but you'll still pay with your time, and you'll still need machine access.
Cheap and easy "factory" quality is probably PCBWAY or similar in China - they do more than PCBs these days. Call it "prototype" budget - several hundred dollars of parts instead of thousands.
My experience is that PCBWay and similar usually offer better quality than doing it yourself. They get their costs down by automating everything they can. They're usually competitive at initial samples than many of the big houses too for essentially the same reason.
The other big insight here is that often making 50 doesn't cost much more than making 1, as much of the cost will be in programming and setup charges, not actually running the part. Sheet steel is pretty cheap, too.
Cheap and easy "factory" quality is probably PCBWAY or similar in China - they do more than PCBs these days. Call it "prototype" budget - several hundred dollars of parts instead of thousands.