Recently got a new Sony digital camera ( simple point/shoot). Wanted to have a spare LiIon battery. I opted for the genuine Sony...$15 on amazon, where 'generics' are also available for a buck 98, literally.

Did I get my money's worth? I do not lose sleep over the 15 bucks one way or another, and ASSUME I bought greater capacity and/ or reliability. Am I snookered?