I experienced the opposite of "Showrooming" last summer. I needed a new pump for our swimming pool. So I jumped on the internet and searched until I found a replacement that would fit into our system without having to modify the existing plumbing. I then called the local pool shop, the one where I've yearly purchased our pool chemicals, and asked them if they had one in stock. They didn't; however, they offered to order me one. When I asked the cost, their quote was a little over twice the cost of the same pump, delivered, from the on-line pool supply shop that I'd used to first ID the correct replacement. I told the local pool shop that I was more then willing to pay $50 over their cost for the convenience of picking it up and to continue supporting their business. No way they countered, they couldn't afford to do that!
Seems to me that $50 for a phone call and a few minutes of paperwork was a more then a reasonable profit for them. So I ordered the pump on-line and received it within 72 hours.
Since then I've started buying my chemicals from a locally owned ACE Hardware as their price is more competitive then the pool shop and their staff is extremely helpful.
So I view the "Showrooming" complaint with mixed feelings now!
They apparently have a adequate number of customers that cant be bothered to do it themselves or can't do math.