I'm not upset that higher pledge tiers don't include the rewards of previous tiers. This is not always cost effective, especially when you factor in T-shirt production and whatnot. I do believe however that the higher levels should give more value to the backer, where value can be reasonable calculated. Specifically, I take issue with the higher of these two tiers:

> PLEDGE $1,000 OR MORE - 10 licenses of Light Table and acknowledgement as a backer of the project.

> PLEDGE $5,000 OR MORE - 25 licenses of Light Table and acknowledgement as a sponsor of the project.

How can a pledging 5x the amount of the previous tier give you only 2.5x the value?