Of course the real cost is doing nothing and staying exactly as you are now!
But let’s assume that makes no sense, in which case our costs are two-fold – measured in time and money
To make the system work you need to spend 15 – 20 minutes a day, no more than 5 days a week. That’s all.
The monetary cost is £99.97 (including VAT) every 4 weeks
No contract which means you stay as long as it works for you!