How much is too much to spend on boots?

Clothing allowance for JE is not that high, I got $153 in my first year. This year it was way better, I'll be able to get a new pair of OCPs and a pair of boots. However, I've seen boots over $200, that's way more than half my allowance.

How much do you spend on boots? How much is too much? Does a "good cheap" boot exist?