Have you looked at Dell (disclamer, I work for Dell) for a replacement for the Dell monitor? I found 2 for less than $200 each that probably come close enough:

    Dell
    S1709W 17" HD Widescreen Monitor
    Usually Ships 1-2 Days
    Manufacturer Part# K419D
    Dell Part# 320-6965
    Max Resolution: 1440 x 900
    Image Contrast Ratio: 600:1
    Response Time: 8 ms
and
    Dell
    E2009WFP 20 inch Wide Flat Panel Monitor
    Usually Ships Within 24 Hours
    Manufacturer Part# D115J
    Dell Part# 320-7085
    Max Resolution: 1680 x 1050
    Image Contrast Ratio: 1000:1
    Response Time: 5 ms

Exactly. I don't have a problem with internalizing costs through taxation, but the revenue from these taxes would surely end up in the general fund. If they were serious about it, they should use the money to fund after school activities, music programs, and health programs related to obesity.