They give you a little waterproof cover for them so there's no reason for it to get really wet from sitting out. You also get a little can of polish and after a few uses your bum will have polished it up to a fine shine.
@LivD
No, I suspect they don't give two hoots about the quality of the data. They're probably thinking that some data, some contact details and additional sales volume will make up for the discount. All without compromising their reputation for priceyness and quality. It's maybe all about second quarter cash flow (closes 21 June, just in time to get the books sorted for the start of Q3).