The short answer is, yes you can, but you have to know what you are doing. First I have to say that Amazon is not eBay. I say that because I have heard the horror stories of folks trying to get a deal, going to eBay, thinking they are getting real clubs, only to find that their too good to be true deal, really was too good and was not true. That said, you still have to be careful and do some homework.
Here is my story. I have been looking, ok, drooling over the new TaylorMade RSi irons. I have been to my local golf dealer, touched them, tried them and decided they were my next set. This step is critical, you have to know what you want, and doing my homework I decided I wanted the RSi2 irons. I am fortunate, that I can order a “standard” set of clubs, no requirement for lie adjustments. This is critical, because if you need those custom setups, I highly recommend that you buy from the same folks who fit you.
Now that I had done my homework, knew what I wanted, and know that I don’t need any fitting customizations, I am down to price. But it is not just about price, it is about buying from a reputable dealer, and using TaylorMade and Amazon’s information on their authorized sellers, I was able to find a vendor that met both criteria. I looked at all the “new” clubs that were being sold and found that there were 9 authorized TaylorMade vendors with the clubs for sale on Amazon. This is where I was pleasantly surprised by what I could get through Amazon. Right now (Aug 2015) the clubs list for $1,119 (us), but summer discounting is kicking in so my local retailer has the set I wanted for $799. On Amazon, I was able to find the same set for $689.99 no tax, free shipping. The free shipping took 6 days to get to my house, and when they arrived, they were perfect, new in the factory box serial numbers and all. I went online and registered them with TaylorMade, no problem at all.
Was this a good experience?, Yes. Do I recommend it? Sure if you know what you are doing. Let me know if anyone had a different, or even similar experience.