> Does that mean I have a gambling problem then? Because I had hoped that despite my M:tG habit [1], I was not really-really a gambler.

Just because someone gambles doesn't automatically mean they have a "gambling problem". But I certainly don't see why M:tG booster packs wouldn't be considered gambling, as well.

> And let's not discuss my DnD etc RPG habit. I flip cards and roll dice way too much for someone who sincerely thinks she's not into games of chance.

But do you have to pay a fixed price each time you roll the dice or flip the card?