Well, there are many electronics stores that deal with these PCBs. In addition, you can browse the site and review the collections. While some offer plate customization according to your needs and requirements, there are some stores that deal with fixed designs.
In general, the cost of PCB vary depending on whether you are buying from the available collection or are you personalizing? Personalization will always charge you more. Then, decide your budget along with your requirement and proceed accordingly.
Basically, the printed circuit board manufacturer presents no challenge to produce PCBs and the technology is quite advanced these days. The main focus for the circuit board manufacturer is how to control the cost of production and save more costs for customers.
For example, the multilayer PCB is composed of three or more conductive layers (copper foil layer), these layers are pressed together and form a multilayer circuit board. The copper foil layer is bonded with PP (prepreg), the multilayer plate is one of the most complex types of printed circuit board. Due to the complexity in the PCB manufacturing process, low yield rate and difficult rework, the price is relatively high.