It seems you used to see a double, maybe triple mark up but we've been seeing triple and quadruple mark up as we traveled this summer. You add the tip to that and it is kind of ridiculous. The other thing we have noticed is some restaurants have labels that are not available to the retail market-that really makes me wonder. Some places, even if they don't make it well known, will let you bring wine for a corkage fee, but it should be something a little special and something they don't have on their list. You could call some of your favorite places to see. It is a good idea to call ahead and arrange bringing your own bottle anyway.