For 3000 4" x 4" vinyl stickers I would have charged $800 including one hour layout time (guessing, would need more details). I would have made $200.00 for one hours work. Approximately 27¢ each. Love these kind of jobs!
And that, folks, is why the internet is killing sign shops. And pretty much any other brick and mortar business. This guy is happy that he only made 6.67 cents per decal because he thinks the appropriate way to retail a commodity product he purchased at wholesale is to just charge for the amount of time it took to order and invoice it. Assuming his wholesaler was charging 20 cents each to arrive at a selling price of 27 cents, he left a minimum of $390 on the table. And at 20 cents, the wholesaler is leaving a lot on the table.
We do decals like that closer to 45-50 cents each in quantity like that. And we do them in-house.