im breaking adown a few things i rmember...
$700 for 141 ponies dec 2004
$50 for... 40? ponies, in 200-01 or something like that
$400 for 210 ponies in 2006
$125 forr/// 50-60 ponies, fakies and plushies
those are the large amounts that i remember.. more might come ta me, lol