Zenith Porthole, whats a good price to pay?

[mr_fixer]

Hi all, there is a Zenith 16" porthole in a Lexington cabinet model G2441R, its up here in my neck of the woods. I was wondering what would the expense be to replace or rebuild the metal coned CRT. The chassis is a 24G24. They want $150 for it and I was thinking worst case cost scenario. The cabinet looks pretty good.