My local grocery store sells maple syrup for $1.90/100mL and table syrup for $0.60/100mL. This means that a serving of maple syrup would cost $0.95 and table syrup would cost $0.30, or a difference of $0.65 per person per meal.
As 'luxuries' go, we're not talking about large amounts of money here, even for a low income family, to afford. I grew up in a low income family, and we still used actual maple syrup growing up because the difference in quality is worth it.