My sales experience has been largely promoting publicising and selling educational and vocational courses, and language services. I have done this in both the UK and Japan. The courses were largely language courses: English, French, Spanish, as well as general interest courses.
I also have some experience of bookselling, in relation to my educational work.
I also sell regularly on eBay, but I don't think that really counts! That's just me periodically clearing out my house!