according to the recent speech by Paul M (full transcript on IPFI website) U2 has sold around 150m records - wonder if he includes single(s) sales in that figure ?
Boy 4m
October 3.5m
War 9.5m
UABRS 9m
Unforgettable Fire 8m
WAIA 2.5m
Joshua Tree 28.5m
Rattle & Hum 14m
Achtung Baby 17m
Zooropa 7,5m
Pop 7m
Best of 1980-90 16m
ATYCLB 11.5m
Best of 1990-00 6.5m
HTDAAB 10m
18singles 4.5m
Total 159m according to worldwidealbums.net