Everyone knows when you buy a Jovi album you get your moneys worth (an indication as to why they've sold 100,000,000 of them) so why buy a single? Bon Jovi dont need to use the media to sell records (i.e the lip sync show; Top of the pops) they have built such a reputation for themselves, touring until they almost died that enough people know who they are.

And the Bon Jovi single sales of UK and USA are no indication of how many they sell; "Its my life" didnt get in the top ten in the US but stayed on pole position in the European charts for 8 weeks!