With regards to comparison shopping, the development of the worldwide web has made things much simpler.
You can just log on and easily discover any number of prices for whatever it is you’re looking to get.
It’s been like this since just about the earliest days of the net but now in the 21st Century things are a lot more convenient.

By the same token, retailers have got significantly smarter about benefiting from the medium and exploiting its features – and, even, its flaws – to guarantee sales, sales, and more sales.
This means that while comparison shopping has indeed become easier in some ways, it has now also turned out to be somewhat trickier in others.

For example, a directory of retailers for some product or other may not truly reflect what is accessible online so much as which retailers are being promoted by the site hosting such a list.
It is quickly conceivable that, far from offering any real price comparison, the list contains solely those providers that have, say, paid to be listed!
Such a situation would clearly make comparison shopping somewhat more hard and none too convenient in any way – and unfortunately this has become something of a norm online now.

Alternatively, the deals offered are indeed good deals and it is unlikely that prices may very well be much lower most of the time.
Retail consumer electronics, for example, is known for its low profit margins and thus the best deals are actually more likely to be identified with big retailers who make money strictly by means of volume.
The mom-and-pop, in contrast, can only hope to lure customers with personalized service as well as other intangibles; they can never hope to participate on price alone.
Thus, it appears that any given range of prices would be relatively accurate, in spite of the omission of smaller vendors.