Hello XXXX,
Yes you are correct, however, we would not be able to say what amount is safe to charge.
If you wish to have a spending limit on your Card account, please call the number on the back of your Card. You may be able to use our automated phone system, or you can speak with one of our customer care professionals 24 hours a day, 7 days a week. From outside the United States, call at (336) 393-1111.
I hope this information is useful. We value your membership and look forward to hearing from you.
Sincerely, XXXX Email Servicing Team American Express Interactive Services