I advertised AT&T's $6.50 iPhone cables on a corporate social site, and a colleague responded with an even better deal from Monoprice: only $3.55 each when QTY 50 purchased. They're a big $4 for less than 10. Monoprice sells a $7 wall charger too.
These aren't no-name or counterfeit cables, Monoprice specializes in this sort of product:
Monoprice, (DBA. MonoPrice.com) Inc. is an eCommerce leader specializing in high quality cables, components and accessories for computer and consumer electronics. Established in 2002, we have built our reputation by the word of mouth of our customers. The Monoprice brand's greatest claim to fame is our consistent ability to deliver premium quality products on par with the best known national brands at prices far below the retail average along with unmatched speed and service...
I'd be willing to try them. I'm told Monoprice's thunderbolt cables are less reliable, but those seem hard for everyone to make. I'll be looking at them for future purchases.