In a retail store setting, the Quest motors may have a couple of advantages to attract the average customer.

The two-packs of Quest motors have a lower suggested price than the three-packs that Estes offers. Per motor, Estes will be cheaper, but some consumers will be looking for a lower price. And the Quest motors look different, perhaps cooler in the eyes of someone looking at them in a store.

Also, Quest is going to release some starter sets which include motors, something Estes hasn't done for a while.