If you are going to do auction listings, lower your starting bid.  The starting bid prices were too high for the condition, especially on the Master Rules set.  That scares off most people.  Trust that the market will find the best price for these in the condition that they are in.  They are in demand, but likely not for the starting bid prices you listed them at.

Most of your other items sold for close to what they were worth.

Alternatively, you can list them as a fixed price, with best offer option and wait until someone gives you an offer that is acceptable.  This can sometimes result in a higher sale price.

Your feedback rating, and the shipping costs from Canada, will be a bit of a factor, too.  The shipping cost, in particular, for lower value items like the Ravenloft modules.

You can also always list them again at a slightly lower fixed price if you are not in a hurry.