Do you know the company they are with? I got one via CV Library for a company called eCareers. I signed up for it and got a phone call, basically wanting my card details to book. I was a little unsure and asked why and they said it was because the cut price (£150 rather than £500) was only available via CV Library and they could only register this way. As it had come direct from CV Library I decided to go with it and paid on my credit card so I had some protection, I was getting refunded from job centre, it was fine and a very good course...well so far, got plenty to do so maybe the rest of the modules won't exist!
There's one or two dropping through my email every week offering everything from excel to business management. I'll have a look at cv library
What courses are you looking for? Would any of these be of interest? http://theskillsnetwork.co.uk/resources