In the world of real life selling, this is not allowed.

I'm going to tell you right here and right now that it's not okay to copy a page of a completed eBay listing and put it under an item that you are selling at your garage sale, a thrift store, an antique shop, a flea market or an estate sale and base your price on that listing.

I saw it again today, there was a wooden rolling pin with an eBay listing taped to the table next to it as if to say  "SEE HOW MUCH THIS SOLD FOR ON EBAY!?  YOU ARE GETTING A GREAT DEAL!" Well what I see is someone that wants money but doesn't want to put the work into selling it.  I also see someone that wants big bucks for something that only 100 people will walk by in their store but the item that sold online was potentially viewed by a worldwide audience and people who actively searched to find the item.

I am a seller.  I've been doing this for over 12 years.  I'm not near as experienced as a lot of sellers as I am only a part-time person doing this out of my house but I have shipped over 9,000 items so that means I know a little bit about what I'm doing, at least I hope so.

In the world of real life selling it is also unacceptable to complain if you see someone scanning a bar code (hijacking my own post for a moment)

I was at a thrift store once and the ladies behind the counter were complaining about "That guy that comes in here and scans bar codes so he can sell the books on the internet!"  Put up or shut up.  If you aren't going to do it yourself, why do you care?  You got the books for free, after all.  It's pure profit for you.  You are just being petty that he's going to make money off the books you sold.  You can do it yourself if you want to. Amazon listing is easy peasy.

(/hijack) In the world of real life selling it is also unacceptable to complain if you see someone scanning a bar code or looking up an item to see if it's worth selling (although my "dumb phone" couldn't begin to be that technical.  I'm still going strictly off instinct, prior experience and a mother addicted to antiques).  If that person is not making you unreasonable offers ("Will you take $2 for that mint condition Civil War jacket?") or piling all your items up and not letting anyone look until they have scoured the entire internet looking for a gem in a junk pile, be happy.

If I pay you the quarter you ask for an item and you find out I sell online it is not okay for you to be pissed about it.  You took it outside,  put it on a table and put a price tag on it. Once I buy it, it is mine and I can do whatever I want with it.  Don't act like I'm stealing from you.  It's stupid and makes you look like an idiot.  Be happy it's out of your house.  Curse yourself out later when you find that you sold an item worth $100 for a quarter.  It's your fault, not mine.

This public service announcement was brought to you by the National Society of Don't Give Me That Look.  Teaching the world to smile at the dime in your pocket and don't frown over the $50 it's going to put in mine.