[richardknop]

It depends on what services you are providing. Try looking at the market and see what your competitors/peers are charging for similar services that you want to sell, it's a good starting point.

In theory you should try to charge as much as your clients are willing to pay for your service. That might be very different amount based on how valuable the service you provide is to them.

[jamesmp98]

I think the issue here is that many (most?) places don't really say how much they charge. They just say contact us for a quote.