I remember walking into Simply outside of Grande Case the first time. I was like a kid in a candy store. 2009 burgundy for about 8 euro. Unreal. We fell in love with Rose on that trip and still enjoy back home.

The OP should invest in a pocket guide to wine around the world and look them up as you go. I have an app on my phone that you take a picture of the label and it gives you average price and ratings. Not sure if it would work on island.