If you aren't planning to compete with Yourduino or Seeduino, you have nothing to lose by simply asking them to recommend a supplier.
Actually I'd be happy to ask my supplier for these in bulk. You also need the female crimp-on pins that snap into the connectors, right??
We sell several variants on these cables:
- both ends "Buckled" (Took me a day to figure THAT one out, 2 years ago!) we would say "Latched"
- one end Latched, other end flat 3-pin (FITS multiple cables on the Sensor Shields and our YourDuinoRobo1 which is a 328 variant with built-in 3-pin connectors.
- One end flat, other end separate female connectors, to connect to arbitrary modules.
And, if none of that fits, or you need more conductors, we have what I called the "Cablemaker" which is a 40-wide flat cable with female connector ends that you can easily strip off any number of jumpers and make the cable you need. If there's a Gender issue we supply male-male pin strips to fix that.
Take a look at this page on the ArduinoInfo.Info wiki: http://arduino-info.wikispaces.com/Cables as it says,
"Arduino is great but sometimes connecting interesting things to it can be a pain."
How many of the 3-pin female 'latched' bodies and crimp pins would you want? I'll need to have my friend in Shenzhen China ask old Mr. Weida about them. He likes us because we have him make about 1000 cables a month for us.
If you want to compete, you'll find a way; I'm not worried about that. Let's just make this damned stuff work.
Excuse all the talk about sexes and bodies :P