PCB manufacturing is reasonably cheap. YMMV, but JLCPCB was ~$20 for a set of 5 boards (minimal order quantity) last time I ordered.
What you lose is not monetary, it's the ability to iterate quickly. It can be mitigated with next day manufacturing+delivery from local manufacturers... at a cost (IIRC, ~$80).
But frankly, it would be nicer to pluck a blank board in a laser, press burn, and have a good enough board in 10 minutes.
Fiber lasers are kind of capable of doing that, but they are still a bit expensive (~$2000), the result is imperfect (scorched epoxy board), and you can do at most 2 layers... if you are willing to manually tap rivet vias to connect the layers.
What you lose is not monetary, it's the ability to iterate quickly. It can be mitigated with next day manufacturing+delivery from local manufacturers... at a cost (IIRC, ~$80).
But frankly, it would be nicer to pluck a blank board in a laser, press burn, and have a good enough board in 10 minutes.
Fiber lasers are kind of capable of doing that, but they are still a bit expensive (~$2000), the result is imperfect (scorched epoxy board), and you can do at most 2 layers... if you are willing to manually tap rivet vias to connect the layers.