Get started now
I think you are not making a blanket call. What if, the solder side has to have wave soldered components with SMT?
You can ask the PCB manufacturer to get right answers.
It is the number of layers and board area that primarily determines the cost. So the PCB manufacturer do not care whether you have componentns on one side or two sides.
An interesting post.
My Full Review and Experience with ALLPCB
Price or quality?
Free PCB Board by ALLPCB Sponsorship
Lead-free Solder Paste for 0402 Metric Chip Components
PCB Instant Quote