That's not where you look when booking a flight though - indeed you have to search all over the site to find that table (even your link did not go there straight away, another click or two required). Hiding this information is unfair. Or just being so stupid as to not realise people need to know it is just bad business practise. Either way they screwed up.
And as per lingua's comment above - the damn things are cost-less; so why not give them to frequent fliers!