There's no definitive evidence that more expensive nonstick pans last longer than cheaper ones. All PTFE is the same molecule, and all ceramic nonstick is pretty much the same, also. More expensive pans may have extra layers or "reinforcements" like diamonds or titanium, but even so, they really don't seem to last longer than less expensive brands. When you pay a premium price for a nonstick pan, you are typically paying for build quality such as a thicker aluminum base, stainless steel lids and handles, etc. These are great features and if you have the budget they may be worth it to you. But a more expensive nonstick pan probably won't last much longer than a cheaper one.