What others have said if you don't love it sell and get somthing you do, otherwise it will end up not being reached for. With regards to not having time, why don't you get something small for actual birthday and he can have an extended birthday by getting his nappy later on.
Not bad, just a little bit predictable and not very special. Would be very happy if I bought this as a preloved bargin but not as a special, wow factor b'day present. Hope you can make your money back on it. I'm sure loads of people would love it