You are exceptionally kind to go through all this for such a miniscule customer. I wish I knew potential customers for you, but I will sing your praises when opportunities arise.
Thank you for the great service.
Thank you for being so fair with your pricing.
I wanted to thank you for all your help, you have been so nice to me and have saved me some money. It is so nice to deal with someone so professional and with a fast response on all my questions and needs.