Ummm... Hard to say. £500k+ easily, possibly double that. :/ It's been a lot of years & a lot of games.
...that scares me Skul, but then again, i have to admit i love the old games over then newer games, and hell i'm only 17 man. i've counted up (round to the nearest $10AUS) and i've spent about $1760 on games in my life, and most of that is in the last 6 years.