Dear :

I am writing with regard to your revised price list for .

According to the new price list you sent us on [date], quotation for [item] has increased by % and quotation for [item] has increased by %. This kind of price increase is arbitrary and unacceptable.

We realize that labor cost has been rising in your area since last year. However, according to the information we have received, no changes in labor cost can justify the magnitude of this increase.

We hope that the trust we placed in your company many years ago won't be violated by excessive, unreasonable price increases. We request you to reconsider the magnitude of these increases and let us know your position as soon as possible.

Sincerely yours,

[name]

[title]