Podle agentury Nielsen SoundScan vypadají prodejní čísla jednotlivých desek kapely takto (platí pouze pro USA pro období od  25. května 1991):
Iron Maiden (1980) - 196,628
Killers (1981) - 211,410
The Number Of The Beast (1982) - 357,463
Piece Of Mind (1983) - 347,400
Powerslave (1984) - 299,022
Live After Death (1985) - 558,578
Somewhere In Time (1986) - 291,420
Seventh Son Of A Seventh Son (1988) - 218,056
No Prayer For The Dying (1989) - 213,745
Fear Of The Dark (1992) - 421,786
Live At Donington (1993) - 23,639
A Real Live One (1993) - 108,177
A Real Dead One (1993) - 130,652
A Real Live/Dead One (1998 -new format) - 20,621
The X Factor (1995) - 112,710
Best Of The Beast (1996) - 251,112
Virtual XI (1998) - 65,243
Ed Hunter (1999) - 52,886
Brave New World (2000) - 282,460
Rock In Rio (AUDIO) (2002) - 69,307
Rock In Rio (DVD & VIDEO) (2002) - 59,644
Edward The Great (2002) - 130,611
Dance Of Death (2003) - 138,904
Visions Of The Beast (DVD & VIDEO) (2003) - 77,850
Part 1: Early Days (DVD) (2004) - 32,037

Pro srovnání - BRUCE DICKINSON:
Tattooed Millionaire (1990) - 20,875
Balls To Picasso (1994) - 65,317
Alive In Studio A (1995) - 9,897
Skunkworks (1996) - 20,361
Accident Of Birth (1997) - 45,921
Chemical Wedding (1998) - 41,363
Scream For Me Brazil (1999) - 10,381
Best Of Bruce Dickinson (2001) - 17,334

BLAZE:
Silicon Messiah (2000) - 480
Tenth Dimension (2001) - 673
As Live As It Gets (2003) - 692
Blood & Belief (2004) - 1,499