Well if I'm making pancakes im already at the stove, putting some water in a pot throwing sugar in takes me about 30 seconds, plus about a minute to wash the pan. Let's just say the total time is about 2 minutes to save $2, that's $60 per hour after tax, or about $87/hr before tax (30% tax assumed). Proabbly a bit lower if you include the cost to run your stove. End of the day it's not significant financially either way.
To me its more about having syrup without preservatives and colouring that made making my own syrup worthwhile. And I guess seeing how much sugar went in psychologically makes you have less, proabbly boosting life expectancy by some tiny amount.
I don't make my own anymore since I just buy real delicious maple syrup.