I almost never seen a normal product that advertises their retailers margin on it, and/or advertises an alternative cheaper store. Can you imagine walking into a drug store to buy OTC meds and the bottle has a "buy this 30% off online at xyz.com" sticker? No retailer would want that.

I occasionally see MSRP price printed on packaging, which is sometimes mis-matched with the store I'm at - its usually convenience stores and other similar places that add extra markup for high-demand items (and usually you know what to expect).

Apples to oranges. Retailers don't force suppliers to give them a 30% cut of every sale. Retailers don't prevent suppliers from selling with other retailers. Retailers have competition and cannot abuse their monopoly, even if they can acquire a monopoly position.

You have it backwards. Apple is the retailer. Retailers do take 30%+ of every sale. Have you seen retail markups?

> Retailers don't prevent suppliers from selling with other retailers.

Some do.

I've bought plenty of products that explained their fee structure built into pricing. There are also plenty of stores that also explain their processor fees.

From big box national stores?