I made a point of having tradeskills covered between my teams. Blacksmithing & leatherworking geared up our pallies, druids, shammies and hunteres very nicely. My pally has enchanting, one of my shammies has inscription. Several of my toons have JC. So that covers random enhancements, too. Each team had an enchanter, a skinner, an herbalist and a miner. What they picked up along the way to 80 covered gearing both teams very nicely. All I had to buy was a few orbs to get my healer and his tank kitted out enough to be heroic ready to get my own orbs.

So all in all, maybe 1k, but that geared 2 healers & 3 tanks for heroics. And that's when orbs were still ~250g each. Ouch.