[random42_]

I guess they bought in bulk and repackaged?

I know somebody who sells stuff at Amazon as a third-party seller. It’s a common strategy to do exactly that: find items that are selling for more than the local store, buy it from the local store and sell it on Amazon. There’s more to it for selecting which products to sell but this is basically how it works. There are people selling courses teaching these things.

[eigenvector]

Search for any Costco-exclusive item on Amazon and you'll find exactly this strategy at work, complete with 300% markups on the Costco price.

[crooked-v]

It's also common for Ikea items, in part because Ikea puts a minimum $50 delivery fee on most items, with no option for parcel shipping.

[rizwank]

Retail arbitrage.