Hey Kirsty,
Thanks for the advice. I will be trying that and see how they respond. I normally charge the figure you gave 10 Eur / month, however the last big one that came for one of the sites I actually tried 100/month and it worked!!! They didn't even bat an eyelid, they agreed straight out!!!
But yeh I will go for a higher figure when they are big companies

Not as high as the 100/month cos that might have been beginners luck lolol!!