I had a clear one from Groton, Conn that had sold for $80 off ebay. However, it was from a farm and was a citrate style and from a small town so that could have upped the price. I do know that they do not come up too often. Recently some from NY sold for between 90 and 200 dollars. Again these were colored and therfore more desirable.
If your kumyss bottles are brown, blue or green glass I'd been keen on making you an offer. Please add here or PM me some pictures of the embossing. Thanks.