Jay...if you want my opinion, that P7 is definitely a keeper! I didn't even think that that particular collector's piece would have even made it to Canada...WOW, man...that is one nice looking P7!!!
But in any case, even though I wouldn't be able to even come close to giving you a ball-park figure, I'm sure that IT IS worth a pretty penny. There's a few P7 buffs here that will surely be able to help you out.
You can also do a quick search on the HKPro forum...lots of HK info there.