Engagement

Okay I need some advice… if you found out your engagement ring didn’t come from the same place or cost as much as your fiancé told you would be upset? Is that something to worry about? I know the price and all doesn’t matter and I really don’t care where it came from as I’m happy with him and to be marrying him but it just upsets me that he would lie about it instead of telling me the truth. And how would you approach bringing that up to him?