LeeS, I bought my bottle of oil of wintergreen from an Ebay seller. The item no. for the 4 oz. size is 220518036153. The same seller has several other sizes. This is supposed to be 100% pure essential oil which, according to several sellers that I contacted, is pure unadulterated product. I was cautioned that this is too concentrated for prolonged skin contact as TwiceBarrel suggests for arthritis relief.
I also saw a synthetic version (methyl salicylate) being sold at generally lower prices, but I never saw any reference to the synthetic version being as good as a penetrating oil. The same seller had some cheaper stuff that is not as pure and is used for scented candle making. This 4 oz. bottle cost me $5.99 with $4.99 shipping.
