I dont have any real limits. I haven't been skipping many CE's in the last few 6mths or so, except a couple I know will be really cheap soon or a franchise I really hate and plan on getting it cheap as well, lol. Though, I plan on buying lots more games very soon since my funding is about to dramatically increase.
I have credit cards but I only use them to gain stuff from them and pay them off before the month ends, so I don't have interest to pay on them. I have probably 10k in credit cards and a credit line for 5k. Besides, it has gained me a good credit score from having them, haha
Obsessed? Yes, but I think it's a good thing as long as it doesn't drive you into the hole.