In the last week or so Kingston RAM has been on sale on Amazon - I picked up 16GB 1866MHz DDR3 for ~AU$25 less than local suppliers.
That's in Australia - "The Lucky Country".
In NZ, it's a bit different. On Amazon.com, a general rule seems to be:Rule:
that most of the suppliers of stuff that I might want to buy seem to be unable to ship to NZ at all, or, if they do
ship there, then the shipping is likely to be prohibitively expensive (e.g., sometimes costing nearly as much or more than the product you wanted to buy).
So, more often than not, I tend to end up not buying.
For that spec
of RAM cards, I did some comparative pricing on Amazon.com first, and observed that the above rule seemed to be operating, before
deciding to buy that spec
from a local NZ supplier, and it helped that they were in the same city, about 20 minutes drive away, and that I had done business with them in the past and found them good to deal with.
to the above rule seems to be where Amazon themselves
are selling something via their Amazon International Sales arm.
For example, in 2012 I had been looking around for a Kindle as a birthday present for my daughter, and the Kindle 4 was available locally in NZ at a reasonable discount (on the usual NZ price) from a retail store chain called Dick Smiths, but it was even cheaper on Amazon.com at US$109 via Amazon International Sales, and they only charged about US$12 for slow shipping to NZ, bringing the net total to US$121. This made it cheaper than the locally-available product by about US$13 (NZ$20) - so I bought it from Amazon on that basis. This sort of thing would be the exception, as I say.