I have been advised that my books are currently available to Kindle readers in the United States for $0.99 through Amazon.com. However outside the US purchasers will be charged $3.44.
They are currently available in the UK through Amazon.co.uk for £0.83 if you live in the UK but this site will not sell to you if you live outside the UK.
However if you purchase through Amazon.fr, Amazon.de, Amazon.es or Amazon.it you can now obtain them for €0.99.
Of course they are also available from my website (Payment by Paypal for £0.70 at present.