Whats The Customer Lifetime Value?

Can you think of a company or brand that you buy from frequently and what your customer lifetime value would be with that company? Calcualate your number too please. I would like to see your responses in reality on what YOU buy from and what YUOR clv would be with that company. Please calcualte as well. I would like to see YOUR responses that I may understand it more please.

the value depend on a particular needs of the person like Domestic uses. no particular calculation