^^ Yikes that is bad luck with the Kenmore fridges.
I've checked a number of used fridge warehouses and second hand appliance stores in Edmonton. All in all, I didn't find them to be a very good deal as it saves only $150 - $200 from new. For a while I was shopping Kijiji and buying appliances off there. There are some good deals there. If you don't count the cost of your time at all that is probably the place where you can find the best deals. It often takes about half a day and you really don't know how long the appliance is going to last. It can be about half the price of new.
At this point, my properties cash flow so I don't consider my time to be free. I buy all appliances from the Brick with 5 year extended labour and product warranty. I usually pay the $80 for delivery and removal of the old appliance as well. I have a 10-year expected life with these appliances and it takes a maintenance issue totally off my plate. It is a huge annoyance for tenants to have to put up with appliance repair. It really hurts your chances of getting a lease renewal which is where you start to really make your money back in this business.
For me, I look at it in terms of economic life of an appliance:
New with 5-year warranty, delivery and removal of old appliance = 10 year life, $850 = $85/year
Used appliance from used warehouse distributor, no warranty, requires personal delivery = 5 year life, $500 - $600 = $100 - 120/year
Kijiji appliance requires delivery, no warranty, requires personal delivery = 5 year life, $450 - 500 = $90 - $100/year
But, your choice for appliances also depends on your exit strategy. If you plan to exit the property in 2 years, I would probably use Kijiji. I plan to pay off my mortgages so I develop and purchase with the view of long term ownership with minimum maintenance. Hope that helps!