The last few forwards we have signed (not including the shitty loans):
Iaquinta (€11.3m, aged 28)
2002-03 - 28 games/8 goals
2003-04 - 32/11
2004-05 - 39/15
2005-06 - 34/17
2006-07 - 32/17
Amauri (€22.6m, aged 28)
2003-04 - 30/4
2004-05 - 24/2
2005-06 - 40/14
2006-07 - 21/10
2007-08 - 38/15
Quagliarella (€15m, aged 27)
2005-06 - 33/3
2006-07 - 42/14
2007-08 - 39/12
2008-09 - 48/21
2009-10 - 36/11
Matri (€18m, aged 26)
2006-07 (B) - 30/5
2007-08 - 34/6
2008-09 - 31/6
2009-10 - 39/13
2010-11 (½) - 23/11
Toni (€0, aged 34)
2006-07 - 29/16
2007-08 - 46/39
2008-09 - 35/18
2009-10 - 25/6
2010-11 (½) - 18/7
Vučinić (€15m, aged 27)
2006-07 - 33/3
2007-08 - 48/14
2008-09 - 38/17
2009-10 - 46/19
2010-11 - 37/11
Tevez (€9m + bonuses, aged 29)
2008-09 - 51/15
2009-10 - 42/29
2010-11 - 44/23
2011-12 - 15/4
2012-13 - 47/17
Llorente (€0, aged 28)
2008-09 - 43/18
2009-10 - 51/23
2010-11 - 41/19
2011-12 - 53/29
2012-13 - 36/5
Morata (€20m, aged 22)
Castilla 2010-13 - 83/45
2012/13 - 15/2
2013/14 - 34/9
Zaza (€18m, aged 24)
2011-12 (C) - 18/11
2012-13 (B) - 36/18
2013-14 - 35/9
2014-15 - 34/12
Dybala (€32m + €8m bonuses, aged 21)
2011-12 (B) - 38/17
2012-13 - 28/3
2013-14 (B) - 30/5
2014-15 - 35/13
Mandžukić (€19m + €2m bonuses, aged 29)
2010-11 - 27/8
2011-12 - 33/12
2012-13 - 40/22
2013-14 - 48/26
2014-15 - 43/20
Higuain (€90-94m, aged 28)
2011-12 - 54/26
2012-13 - 44/18
2013-14 - 46/24
2014-15 - 58/29
2015-16 - 42/38
I think you pretty much get what you pay for, and strikers like Higuain don't seem to come up all that often.