And how many of those went to replace the many, many units that broke due to the PS2's faulty hardware for the first half of its life?
Anyway, fun system. I have a decent library for it, with the likes of Okami, Samurai Shodown Anthology, Altered Beast (PAL), Gradius V, R-Type Final, Dragon Quest VIII, Final Fantasy XII, Metal Slug Anthology, Sega Ages Vol. 30 Galaxy Force II Special Extended Edition, and more.