I occasionally make PCBs, as a hobby, and I would love to find a manufacturer with a next-day delivery guarantee to the US (California) for simple 2-layer PCBs. I would pay $50 just for shipping for that service, even for just 2-3 small PCBs that fit in an envelope. But to my knowledge this isn't possible. I hate designing a project, and having to wait a whole week to get my PCB. This truly hampers my creative flow... sigh