A couple of reviewers have tried this recipe because they ran out of eggs and everyone praises it, which means that these pancakes are definitely good. To tell you the truth, I haven't actually tried a regular pancake with eggs (yes, after 8 years in North America, I haven't tried it once), so I can't compare it to that, but I'm pretty sure that these pancakes are as good as the usual ones. If you love pancakes but don't always have time to make them from scratch, you can use a pancake mix. If you want something a little different, you can also try adding some pieces of bacon to your pancake mix.
There's no need to break eggs in the pancake mix when you can just as easily use a box of egg substitute. For basic pancakes, a good rule of thumb is to add 1 teaspoon of vanilla extract for every cup of pancake mix. Later I found a whole-grain pancake mix from Bulk Barn, to which I only had to add water and the egg-free pancakes were ready. There is no definitive answer to this question, as it will depend on the type of pancake mix you use, as well as your personal preferences.
But if you don't have a pancake mix handy or if the instructions aren't clear, here's a guide to how many eggs you should add to the pancake batter.