extended warranty?

I bought my 99 accord 4cyl with just over 71k miles. FIRST thing I did was do tranny fluid change, but was offered a 2yr 24k powertrain for just over $800.

Is a powertrain extended warranty worth it considering the costs of another tranny? Cos I'm sure my alternative would be more $$$...I just hate (and have done) buying a warranty and not being able to use it with my previous dodge stratus.