While searching for keyboard acoustic instruments on the internet last year, I found one I really wanted for my collection of instruments. It's price is $15, US, and is sold by a company in New Delhi, India, called Bina Enterprises. I emailed to confirm the price of $15, and found that although it is $15, the shipping to me from India is $130.

It's called a banjo by Bina Enterprises, and is also what the Japanese call 'Taeshokoto'. It is a stringed instrument, with keys on the strings. The strings are strummed with a pick, and the keys are played simultaneuosly with the other hand.
You can see it at
http://www.binaswar.com/
Look under keyboard instruments. There is also a little harmonium called a dulcetina, which I would dearly like to have.