Got this idea off of vindicia.com
"Virtual-goods business models usually leverage virtual currencies as a form of aggregation—typically to entice customers to buy a larger amount of credit and purchase goods and products they want. Since transaction costs are a larger percentage for lower price points, it makes sense to offer incentives for large credit purchases. For example, if $1 amounts to 100 credits, offer a bonus promotion of 600 credits for $5."
Since the prices of items in the Nex are likely to remain fairly high I thought that something similar could be applied for EVE. Something like 1000 more aurum for 2 plex, 4500 more aurum for 6 plex, etc. It's just an idea I wanted to bring up since I was doing some research on MT's. *Putting on Flame ******ant suit* Flame on if you must.