Sometimes that works, but I've had cheap screwdriver bit sets that the point wore off almost instantly, cheap sockets that split under any pressure, blades that splintered, punches that bent and rechargeable batteries that didn't. You don't need to spend big money, just stay away from the tat and find out what the professionals use. There's no need to splash out on seriously 'professional' tools - the ones the professional garages use on a daily basis - but there's also a lower limit. I've got two great shops locally that the serious mechanics and handymen use. They won't spend two pounds where one will do but they won't throw money away on unsuitable stuff either.