Spliting TT drops, and fairness

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My question is how you guys go about splitting TT drops. When we were doing runs for 70 and 80 gear, it usually went Barb>Cleric>Veno>DD-by-level, sometimes switching Barb and Cleric. This was a pretty good system, as Barb/Cleric costs run higher, and the mats are generally of proximate value.

This issue recently came to light in my faction, as when we do 2-3 runs, Antenna is worth significantly more than Forushura's Arm, which is worth still more than anything else. As such, I find myself getting Antenna on almost every run, Arm when there are no Antennas, and a squad of frustrated DDs.

I don't think there is a question that Clerc/Barb costs are higher, but just because I'm spending 100-200k more than a wizard, why am I entitled to a mat worth 2 mil and he gets stuck with 700k?

Here are the prices (give or take, based on AH) of mats from 2-3 on Dreamweaver:

Antenna of consumer of souls: 2-2.5 mil
Forshura's Arm: 1-1.5 mil
Giant ape's tail: 600-800k
Horn of Feng's horse: 200-400k
Astral Stone:700k-1 mil
Frenzy Lion's Edge: 1 perfect mana pot

Recent run had 5 tails, 2 arms. 5 man squad, I got arm and a tail, Barb got same, and veno/dds got a tail each.

A Barb in my faction recently came up with a bidding system, similar to what we do with gold mats (sell in AH and split money), but would by pass the AH. Basically, you're just buying out the squad for your drops.

Problem I have with this is it's impossible for someone without a bankroll to get mats. They would profit nicely, but would end up buying mats from AH at inflated prices.

Now, I don't mind doing charity TT runs every so often to help someone finish their gear. I recently did a 2-2 where the barb said beforehand that he was taking all Manes and nothing else; everyone was ok with that.

But with this system in place, how are dds supposed to get Antennas and Arms, short of doing MANY more runs than clerics/barbs. How do you split mats in your faction? Discuss.