Market MinLevel

[Valdacil]

I finally figured out how to adapt Zonx's My Class/Level code for the market window, but now I was wondering if anyone has yet figured out how to set the minimum level also. Ideally, i like to set max level to character level +2 or 3 and min level to character level -10. Is this possible using operators? And if not, could someone explain to me the conditional statements enough that I could adapt 70 of them to manually do this?