That caught my eye so I had to look:  
http://www.alibaba.com/product-detail/wholesale-China-cheap-artificial-vagina-liquid_60635527700.html?spm=a2700.7724838.2017115.9.76fdde28oX7sh0
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Only 80 cents per kilogram! THAT should give some negotiating power!  
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Wow! Alibaba is a gigantic sex toy store!! Vaginas, penises, ...  !!
http://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&SearchText=artificial+vagina+liquid