ok, thanks guys. Just to correct something someone said, they do have the plated bottoms. They are made in France.
If they do have the heavy gauge bottom then I'd keep them if, as you say, your current set isn't very good. You will notice difference for sure!
I love the handled Rondeau. The sauté pan thing on far left. New, that was probably a $100+ pan if you bought it individually.
Those are great for browning off meat then straight into oven.
Like was said above, if you need the money I'm sure you could get $50-ish.
But sometimes not spending money IS making money.
you got a great product there that, taken care of, will last a lifetime.
Grab a cook book and enjoy them!