Three sales can be right by coincidence in a very uniform neighbourhood with identical housing stock, but most Saskatoon properties differ enough in age, lot, basement development and condition that three comparables leave real gaps an agent has to paper over with judgment rather than evidence.
Ask what was excluded and why, not just what was included. A CMA that shows its adjustments, the dates of sale, and the properties it deliberately left out because they were not truly comparable is doing real analytical work; one that hands you three addresses and a number is doing marketing.
Hold any agent, including Joel, to showing the comparables and the reasoning, not just the conclusion. Get your hand-reviewed valuation from Joel Dyck.