If a company takes that route, that tells me two things.
One, they're really not that concerned about a user's privacy.
Two, they're taking the cheap way out instead of paying for a service that does it automatically when a customer places an order.
If I talk to a company and I hear "Oh gee! We didn't know there were online age verification services!", I flee.
No offense, but, some of us aren't as grumpy as you