You are right. My minimal research was inadequate. There are some shonky kits on EBay for £53 that don't include the battery. At least one on Amazon for £80,

You are right. My minimal research was inadequate. There are some shonky kits on EBay for £53 that don't include the battery. At least one on Amazon for £80, but looking more carefully its probably looking more like £350 to £400.