Postal money order?

IMO- there are plenty to of sites to send and receive money. A lot on here use PayPal. It’s my method of choice. Vendmo and there are other money sharing methods. Heck- even Western Union if worries.

The main thing is research the seller. Click on their name and read their stats. How long have they been on here? How many “likes” and how many posts have they been part of.
If they are on here more than a few years and have contributed a bunch... then worth working with. Ask for a phone number and talk if needed. Honestly most people on here are here to help. But the person who is a new member with 1 day of time selling a rare part.... walk away.

We see that all the time. Join the board- sell grandmas car and never hear from again.

Good luck-
Joe