Reviews seem to be split 50/50 as to whether it's great or rubbish. However it does appear to be genuinely reduced and sold by Amazon as opposed to a marketplace seller.
It is significantly easier than this... - link removed and placed in below post - though arguably not as easy as stamping on them.
I realize this deal isn't for everyone but it does appear to be a genuine reduction.
•Can Crusher by Kitchen Craft
•Suitable for crushing aluminium cans up to 500ml in size
•Safe and easy to use
•Reduces can size by up to 80%