I am almost done with a board design that I have been working on for some ideas of mine, and I was wondering if it was a good enough design that others might be interested in buying one. The specs are as follows:
*Runs off a single 1100mAh LiPo cell.
*Has a triple DC-DC converter that charges the LiPo off USB and supplies 3 voltages for various duties.
*Voltage 1: fixed 3.3V at up to 400mA. This will power the CPU and any other on board devices.
*Voltage 2: variable 1.95V at up to 400mA (or variable whatever voltage, depends on the divider) voltage is programmed over the I2C bus.
*Voltage 3: variable 3.3V (same properties as above) at up to 1A
*Vstdby: Fixed 3.3v at up to 40mA. Will power the RTC.
*LiPo fuel gauge chip accessable over I2C.
*All IO broken out to 0.100 headers.
*Screw terminals for the auxiliary power outputs (V2, V3, VBatt…)
*Micro JTAG port with adaptor board. (optional)
*Estimated 2H run time (extreme worst case) off the battery.
*Board and battery expected to be approximately 2"x3" and 1/2" thick (max, not including any connectors).
*High quality 4 layer board.
My main uses for this thing are to create something like a programmable OLED Convention badge, but it could find many many other uses such as a remote data logger or robot controller.
So, would anyone here buy one? I should have protos done in about 3 weeks to a month, I will know by then how much they will cost each to make, and thus what I would sell them for. Right now I am mainly in need of the cost of the boards and the cost of stuffing them (preferably by the same company, so I don’t have to ship them around the world twice!).
And on that note, anyone here have experience with http://www.ezpcb.com? They will both make and stuff the boards, and for what looks like a good price. Is it too good? 
Thanks,
Mike