I bought for I think 3 bucks from a Hallmark store the plastic book stand. Had a piece of wood just drilled holes and attached.
I just lay a bottle in it and align the label up at the front plastic piece and press slightly then spin the bottle to attach the label. I prefer the 6 labels on an Avery sheet. They wash off easily in warm soapy water.
I placed the end of the bottle at the end of the wood so all were the same.
To be honest I used it at first but now I have so many bottles I just slap a label on. It works real well but when you get bottles that increase/decrease in diameter it gets crooked. I prefer bordeaux bottles and now I have enough that I can throw away some of those odd/awkward ones.