Maussa , Tszyu , Collazo , Urango and Oliveira(not sure on that one) were ppv . Only the Tszyu fight sold very well if memorary serves me right , the rest did okay All of those were on Sky Box office, his fight against Castillo was shown on a Subscription channel , which gained a lot of viewers from that fight . Them also having the Cotto v Judah fight 2 weeks before helped somewhat in attracting boxing fans though . The fight was also shown on a ppv channel, but the vast majoirty watched through Setanta(the subscription channel) as it was like the same price to get that for 3 months as to watch the fight on the ppv . Actual figures I can't give you , but maybe this info helps you some what .
I had always thought they sold exceptionally well for PPV in the UK which is an entirely different ballgame to the US...
Maussa , Tszyu , Collazo , Urango and Oliveira maussa was not ppv olivera was not ppv tszyu collazo urango castillo all took place from 2 am to 5 am uk time on sunday mornings only figures we have is that mayweather did 1.2 million uk buys ppv that fight started at 4.00 am uk time.