I tried to see what interest was out there for @150 of my .ca's mediocre to good domains, and there was very little. I think if your trying to sell a "Portfolio" of .ca's they would have to be really good names, names that a domainer is willing to sit on for 10years or more to wait for a great offer( 5 + figure ).
As for a mediocre portfolio like mine it's hard to sell domains that the buyer my have to sit on for an extended length of time, for a domain that might get $2,500- $5k to an end user, the work, hold time, and dealing with $25 offers sucks.
I like rlm's idea of putting a spread sheet together, and any domain info, ie registrar, age, any traffic, and any offers that the domain has received. I know most domainer's can do their own research on domains but on a big list it's easier to just glance over the list and pick out potentially valuable domains. The biggest hurdle is finding people to have a look at the list.
My biggest problem is that when I buy a domain, I can see a end use and become too attached to the domain and hold the domain, turn down smaller offers only to let it drop a few years later.
Where do you list your domains for sale?
- epik, efty, sedo, afternic, godaddy, dan.com?
this is my limited view of the .ca market.