It may not be necessary, but similarly I don't think there is anything necessarily wrong with it. It's part of the opinion of the reviewer, "I liked X, Y, Z and because of X, Y, Z, I think this game provides a great value for the price." Disposable income issues aside, I think the majority of people, even those with some money to throw around, still want to know if a game is worth their time and money. If a reviewer wants to address that directly, I don't think there's an issue with that. As you said, find a reviewer who has tastes you like and provides the kind of review you like. If you don't want a valuation of price, find a different reviewer who reviews differently.