unless you live in AZ. You got to bring in a DNA test of your first born, social, DL, state occupancy, address, etc etc

Walmart money orders are about $1 cheaper than USPS money orders, but there are geographies where USPS is more convenient than Walmart for purchasing or cashing said money orders (my local post office is closer than a Walmart, for example).

Also, USPS money orders never expire. Those from other providers start to incur fees after a duration of time.