There are definitely quite a few people out there doing this. This guy is neither the first nor the last to be doing this type of product channel arbitrage. The

There are definitely quite a few people out there doing this. This guy is neither the first nor the last to be doing this type of product channel arbitrage. There is an acquaintance of mine who lives no more than 8 minutes from me who does this as a side-job and it brings him in an extra couple hundred to a couple grand a month. He obviously spends time as shown in this video going to WalMart, buying certain items, and then listing those items as being for sale through Amazon. His margin takes a slight hit sometimes when uses Amazon Fulfillment services to keep the item in Amazon's stock but he also spends time shipping items from his own basement. I imagine his fingers get a bit dry and cracked after handling so many cardboard boxes after awhile. Additionally, he does use price tracking and discovery tools to try and find the deals with bigger amounts of arbitrage between Amazon and WalMart. Because pricing is so dynamic and changing all the time, occasionally an item just barely breaks even as Amazon will sometimes magically update prices for its own goods to match or beat what might have been available at WalMart in their store. But it all depends and varies a lot.