I hope these sorts of comments won't be your only contribution to GJ.
Hammers are basic tools. If you are a serious craftsman, pro or DIYer, you have your choice of a number of hammers all with lifetime warranties. If you are young or work hard, it's only a matter of time until the plasticizer in your handle gives up. Plastic doesn't last forever.
I would choose a hammer from a company that you know will be around in 10 years, I.e. Not Sears, that offers a convenient warranty service. Snap On offers very convenient warranty service for some.
Snap on hammers won't last forever. But they are very nice, possibly the best hammers out there. The handles are nice, offering two comfortable positions. I don't think paying $40 for a hammer I will use and be happy using for the rest of my life is too much to pay. If you want to pay $10 for the cheapest hammer made and use that for the rest of your life, God bless you. Just don't criticize me for wanting to use nice tools that don't hurt my hand.
The key here is, some people here are thinking hammers are disposable. You buy it for $10 and when it breaks you buy a new one. Snap On doesn't agree. My guess is, the people selling the $10 hammers are counting on the fact that 10 years from now, 90% of customers will have lost the receipt, forgot where they purchased, or just won't bother with the warranty because we are consumer disposers.