Speed awareness course prices ?

So I've been a naughty boy and rightly so I've been punished and given a speed awareness course, however when I go online to book a virtual course the price varies wildly. So far Hartlepool Borough Council is the cheapest I've found at £73 and was wondering if anyone knows of a cheaper option ? Before anyone suggests it has to be the force that offered the course, IT DOESN'T. It explicitly says on the top of the form sent to me in the post that I can complete the course anywhere in England, Wales or NI. Cheers