Just sounds like a nice guy to me.

He possibly just wants to date your mother. He could have heard what she was looking for, liked her and researched and found a place selling the item, so he had an in to talk to her.

Keith

These have been some interesting responses. Appreciate everybody taking the time.

Track the old guy down and put him in a Kimura arm lock. Old timers have weak shoulders. He'll tap out right away and spill the beans what he is up to.
Don't release the hold until he fully confesses.

Was he close to your mother's age?

Being a small town, you should be able to find out about him easily.

Keith

Mom has a. Cell phone? Where does one find a phone book that gives cell phone numbers?
Did the cashier have your mom's number from previous transactions?
She should call the guy and see if he is rich!!