http://calgary.ctvnews.ca/neighbours-shocked-to-hear-douglas-garland-is-a-person-of-interest-in-missing-persons-investigation-1.1911106
In this news report you can see inside the front area of the home somewhat. I can see the corner of the loveseat that is listed on KL kijiji ads. I get the sense not a lot of the estate items were sold those two days. Two points come to mind when I view this report.
Firstly, the LE don't appear to be interested with anything on the main living area as they begin to walk in the direction of where the stairs would be located in a side split home which is generally in the middle of the home and seem to look upwards towards the area above the garage in deep discussion. If this is the area where the desks were located as well as the leather couch set and bookcases, it could be the office-den area of the home. The bedrooms being in the back of the home. If there is something of concern on the main level of the home you can be certain LE would close the front door as they know a reporter was zooming in on that door.
Secondly, were AL and KL attempting to raise money during the estate sale to help them pay off a debt and being that it seems not a lot of people who attended did not purchase anything and there seems to be a lot of furniture still in the home perhaps the grandparents fell short on their financial obligation and someone was not happy with this and it escalated.
Judging by the looks of their furniture, I can't imagine them expecting to make more than a few hundred dollars on the sale....