Hi, I provide database administration services. My clients can call (and they do) 24x7 if there is an issue with database. And I don't mind. In the past I have been charging hourly for that. But don't think this is smart on my part. 1h during vacation, weekend, or off-hours is worth more. What are the options of charging for this type of support? The best I could come up with so far is: - charge $X per month where 3h of support are included. - If there is more than 3h per month those get charged at 2x normal billable rate. What do you think? Thank you!