While doing my daily search on ebay I came across a seller offering see thru PVC raincoats for sale at just £7 each, I've ordered 2 and will let you know more when they arrive.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWNX:IT
See through PVC plastic macs on ebay
Re: See through PVC plastic macs on ebay
These look a lot like the ones Suzie High is offering as well, which I bought two (luckily at a reasonably price). The pvc is those coats is nice and soft, but they smell strange/different from other pvc rainwear.