One way: Contract work (e.g. fixed allocation of hours every month) gets charged at $ X / hour. Ad-hoc (e.g. emergency work, one-off tweaks etc.) work gets ch

One way: Contract work (e.g. fixed allocation of hours every month) gets charged at $ X / hour. Ad-hoc (e.g. emergency work, one-off tweaks etc.) work gets charged at $ (X * 8) / hour. I negotiate my hourly rate depending on how much work is on offer. When a client ask I explain that a repeating allocation of fixed hours means I don't have to spend time on sales & negotiation to fill those time slots every month. That's why it's so much cheaper.