Check the grammer, please.

Dear###

Recently I noticed that your iPhone App keeps good sales in Japan. Having visited your site on the App Store, I noticed that no option is currently available for your potential Japanese customers to view the application and the description in their native language. As I find the requests in the reviews, translating them to Japanese would benefit both yourself and your future users in Japan.

Now, I have a special promotion running to the 31st of March 2010. I am delighted to be able to offer you a discounted rate of $0.## per word, applied only for iPhone apps and the descriptions on iTunes. I guarantees the quality of the translations, and will give a full refund to any of my customers who aren't completely satisfied.
(I do take an order from 10 words as aftercare since iphone applications usually have many revisions.)

For further information, please contact me at ###

Thank you very much in advance,
Jim