Impressing "the suits" obviously isn't your end goal.
Regardless of your goals, I urge you to avoid enrolling in a cheap MBA program. An MBA program's value comes primarily from the network of classmates, alumni, potental employers, and the signalling effect of the programs selectivity. Cheap MBA programs typically fail in all of those categories.
Quality of your MBA matters too, not just affordability. You might find in person networking more effective. I've met plenty of fresh MBA graduates looking for a technical person to make their dream come true. Based on the aura of desperation that surrounds them, I would suspect they're pretty affordable...
Good site to check out: http://www.geteducated.com/online-college-ratings-and-rankin...
It is not for profit (quasi-public), and fully accredited.
www.wgu.edu