Dear Rachel,
I am always interested in finding out about new suppliers so I took the time to calculate an example quote using your online quote system (the registration process is very arduous especially as it required me to enter my address twice, despite ticking the "same as billing" checkmark, so it is good that you are revising the website).
I compared based on a recent design we had ordered from PCBCart (currently our standard PCB fab supplier based on very positive previous experiences). You will appreciate that I would not move to a new supplier unless they can offer something better, be it more flexible (say allowing multiple designs on a combined panel as some PCB fabs now offer), quicker lead time (12 days for 4-layer at PCBCart so you might have them beat there but you don't specify whether your lead time includes shipping as PCBCart do), or cheaper (not always the most important as you will appreciate... If I order a PCB from a new, cheaper supplier but we end up loosing 2 weeks of development time if we have to reorder if the quality is not good my boss would not be happy!).
The design I checked has the following specs:
10 pieces, 51x34mm size
4 layer, stackup 10-20-10mil (1mm thickness)
FR4, ENIG Finish, white soldermask, black legend
.15mm track&space (I chose 6-8mil on your site, though strictly speaking 6mil is .1524mm)
.1mm restring (4-10mil on your site)
.2mm smallest hole
These are the minimum specs required for this type of design (.8mm pitch BGA, RF section) so there is little scope for cost optimisation at the design side.
The quote from PCBCart was € 219.40 (+€25.40 shipping), your site's quote was €256.01 (+€29.11 shipping).
PCBCart is far from one of the cheaper PCB fabs (in fact as Dave mentioned in one of his recent blogs their prices have gone up due to their popularity), so I think you have a bit of work to do to make your offering competitive.
One area where you could offer something competitive is on "high"-spec cheap prototypes... If you have a look at how Laen (
http://dorkbotpdx.org/wiki/pcb_order), iTead and Seeed Studios offer PCB prototype services (they collect orders from several customers, panelize a board, and separate the different orders), there are now many good offerings for "standard"-spec boards, but nothing for the type of spec required for my work, and I am sure many others are in a similar situation.
A good "standard high-spec" in my opinion would be 4-layer, 10-20-10 stackup, .1mm track&space, .2mm hole, .1mm restring, ENIG or Immersion Silver (HASL is unusable for BGA/QFN). A good target price would be $50 for 10 boards up to 50x50mm each, with a suitable lead time to allow you to collect multiple orders. 14 days would be good, 21 days ok, more than that problematic.
I hope you find my feedback useful,
Janek