I asked Sony UK for sale figures, or estimates, for the games on sale, before and during the sale.
in response, Sony UK say "Unfortunately we never give out these specific sales figures or percentages", But they did say that "As with all sales, the items see an uplift".
Granted, it's an obvious response, still its nice to know that the games in the sale are selling well as there was a few games there that some people may have missed.