Good for you hb -- Not much compared to replacement cost from GM but at least it was something. Worth the space if you have it for sure.
I would think that there are some owners who just want the original exhaust and would jump at a reasonably good 'take off system'.
Admittedly there won't be many since aftermarket is so popular these days and yield some extra ponies and 'tunes'......
If we're able to take it off in as few pieces as possible, I'm keeping my OEM C6 system to re-install should I sell the 'vette and take off the LG system to recoup some of the investment in the LG.
The $150 for the Ti ZO6 cat back sounds like it was all but a steal.