omg...i also got the same experience yesterday. got the email from a person called 'Natasha". asked me the item still available and i said yes. then asked me to ship to west africa for her nephew as her nephew is working in west africa.
what raise my suspicious are:

1. i am selling medela breastpump which is from UK. Cant you get it from UK yourself and why from me? As you can get from UK at more cheaper price than me.
2. does not even ask more details on breastpumps or negotiate and very fast replied saying yes, etc and ask me to provide her the shipping cost using DHL, etc. (normally buyer is the one "drags" the process instead of seller)
3. I am advertising at mudah.com.my and you are from UK. Why not you buy from Amazon or ebay, the more reputable selling sites? And probably the price is cheaper than me??

I showed my husband on the email and my husband said high chance is fake one. then he searched on internet and found this thread. omg... only i know i am so "lucky" ..