How do you work out what to charge?

[FlipFantasia]

I've been out of the workforce for 2 years (I'm a Sahm) but have just been offered some freelance work through a contact.

It has the potential to be a regular thing and maybe even grow once the kids get older (they are happy for me to work whatever hours suit me).

But I have no idea what to charge! Any tips of how to work that out?

Take a look on www.peopleperhour.com/? and see what others are charging for similar work perhaps?

Thanks! I kind of plucked a numer from thin air and they agreed to it (should probably have asked for more!). It's quite niche, so didn't find anything on that site (was interesting to browse though!).