I've used them, too, and highly recommend them. They sent me 12 boards rather than 10, I guess as a bonus. With their standard and very cheap processing, they electrically check 50% of the boards and mark them as such. Also, from my emails to them, they seem to be fluent in English unlike many Chinese sources for various things I've dealt with.
--- In Homebrew_PCBs@yahoogroups.com, John Greusel <greusel@...> wrote:
>
> John,
>
> I just bought 10- 50x50 mm boards from SeeedStudio.com for $14- and I believe that included postage.
>
> John
> KC9OJV