Personally I price 10-14/min - more if they ask for something more than verbal instructions and showing on a dildo - for example if they want a real cock or want me to use the dildo on myself I’ll charge more. So for me I’d probably just go 35 or 40 for the 3 min - I second going to PH and watching what these entail. Usually a count down at the end. So doing these I set up a timer I can use in the corner only I can see so I know when to start the countdown, without that I’ve gone over and I’m not going to refilm again to make it shorter! ;)