This is a bargain at £10.
I chose to get a scooter for my 5 year old, because he is no longer confident on his bike (with stabilisers)after a couple of falls. Someone told me that a two wheel scooter is a great way for children to gain confidence in their balance. Unlike a bike, it is so much easier for them to skip off when they lose balance, that they are unlikely to have falls.
From my point of view, the scooter is also much better than his bike because it is so small and lightweight. Not only could you carry it one hand, but it easily folds up (without the need for tools), and I hook mine over the back of my baby's pushchair. You can literally 'take it anywhere'.
I have also tried out the scooter myself, and it is great fun. The handles extend for taller people to use them (again - without the need for tools)- so your child can continue using it as he grows.
Long term, I would love to see my boy ride a bike, but for now, this is a good alternative, and at £10 you can't really find anything to complain about.