4.5 million people took the underground that day, the highest number ever. rich ar? >> ancient but much loved, annabel. what about the sales of merchandise in stores and online? there was concern early on when the olympics first started that folks weren't showing up, tourists were staying away, they weren't buying. >> well, that's proved not to be the case. merchandise is selling well according to the organizers. it's estimated 750,000 people have visited the megastore in the olympic park, i think most were there on the day i was in it last week. it was unbelievably pack. some items reportedly sold out in three days. britain is suffering economically right now, but there is some good news. according to visa, visitors to the uk have spent more than $1.4 billion in the last two weeks. and those from the u.s., you'll be interested to know, have been spending the most. and there are plenty of more unusual items up for sale, too, as perfect souvenirs of this incredible games. lots of objects from the opening ceremony and the events themselves are being auctioned