Would a cheap engagement ring make you worried?

“My now fiance proposed to me on Christmas morning! We had a few friends over for New Years Eve and one of them works at a Zales in the area. She says they sell that ring and it’s been on sale for about $80. I was so embarrassed! He’s an engineer so it’s not like he doesn’t have money.
I’m not a superficial person, but is this a bad sign for our future?”