Dear Sir,
This is to state that we are interested in placing an advertisement in your magazine and would like to know your charges for the same [TYPE OF ADVERTISEMENT, ex. a full-page color advertisement]. We would appreciate it if you kindly forward the following information to us:
The relevant advertisement rate sheet
Conditions and/or restrictions on content and artwork
The minimum lead times you require
Any other information you deem relevant
In case you have any queries, feel free to contact me at (phone no.). I shall look forward to your prompt reply.
Sincerely,