Yep you are right1 You can get exactly the same product from Argos fro £29 quid, I know 'cos i go through them about one per year and use them for stripping off tiles and demolishing small walls which they are good for and you don't get upset if they break.
I use my expensive SDS for drilling long or small holes up to 25mm dia and these old cheap things for 5" plus holes!
PS Jethro was right you are spending too much time on the "bay", I hope your misses confiscates your 'buy' button!
SteveD