Dear Mr. Alan,
The past two years saw a marked increase in our purchases of goods from you. In fact last year we touched USD100,000, a new record for us. Also if you check our account, you will find that we have always been prompt in our payments.
In view of these we would like to ask you for an additional discount of 5% of your goods. At present we are getting only 8% to 12% discount. If you could let us have a better discount, we are sure that we can increase our business volume even more. This is something beneficial to both of us.
If our proposal is acceptable to you, please inform us soon. We will be placing our next order in a fortnight or so.