100% wrong.

It is the easiest way to get ripped off for sure.

https://pinside.com/pinball/forum/topic/how-to-not-get-ripped-off-in-pinball-vids-guide

Yes you can.

The sender has to pay the fee rather than the receiver.

A great way to get ripped off.

You can use PayPal and bypass the fees by using send money to friend/family (no charge).

21

This happened at my work, some tweaker washed five dollar bills then reprinted to a hundred dollar bill. The water mark is the most important thing too check.

The primary reason is if you have to contested transaction, it goes into dispute, or other mitigation you are $#@!ed.
This does not even consider scams.
PayPal for large transactions is a fee hit as well depending on the nature of the sale.
"Go talk to Ebay customers" if you want to learn more.
More first time pinball machine buyers have the "woes of toil and desperation" almost as long as the history of the internet in the past 15+ years.

If you don't handle cash everyday for transactions it could be trickier but there are lots of counterfeit markings to look for. Another cheap investment would be a uv light to check the embedded colored threads. I agree though that while it's good to be cautious someone's not going to have that much correspondence with you and try to pass off fake bills vs going to a show and trying to pass some bills then take off before you've figured it out.

It's an uncomfortable experience when you have to tell someone that you can't accept their payment because it unfortunately doesn't pass the verification measures for authenticity but laughable when they attempt to give you more fake currency. Also, criminals will bleach $5 bills and reprint them as 100s which renders the pen pointless.