There is also a "down-side" to...
...to the proliferation of the internet. Although prices have generally gone up, some prices have actually gone down.
Pre-internet, a lot of trade in goods was local (i.e. state, local, adjacent states, etc.). Your purchasing world, unless done by catalogue sales (think LL Bean, Lands End, Cabelas, etc.) limited your search area. With the expansion of the internet, everyone gets into the interstate fray. Now, anyone with a web site, can compete with even the largest volume retailers, and everyone has had to become more competitive. Hooray for the consumer. Notice now that state governments are scrambling for lost sales/use tax revenue?
On the other hand, that "rare" thingamajig that was in Auntie Em's closet, isn't really rare, the 9,999th one was just sold on eBay, or where ever.
Sure, prices are up in some areas; but overall the consumer has won big.