I had a set up (strung in a W pattern) rigged for growing hops from rhizomes obtained from my local supply house, still nothing.
They have a refractometer, yet at almost twice the price.
Not a big issue for me.
They carry grains, dry and liquid malt, I just use the liquid and dry stuff, depending on the recipe.
Your at Home Beer and Wine Supply
I used to do the wine thing also, I have so much, I stopped. I opened a Luna Rossa '03, last night, it ages well.
I "adjusted" a chest freezer with an adjustable thermometer. I did that so I could produce a lager. I'm sticking with ale yeasts, less hassle. It is now my wine cellar.