Just sitting here thinking about cards and marks/sub types. I've never gotten a infinite to work, I'm assuming because they all have "concierge" services attached to them. but also wondering what type of cards generally swipe for the high amounts? I've had an amex centurion do $4500 2 years back, I've had classics do up to $1600 by accident, and I was kind of shocked. other than that worlds, signatures, platinums, premiers all seem to top out the same for me some will do 1 - 1.2k some will do a little higher. I know there are other limiting factors, i.e. daily limits, user security and spending caps, etc. just looking for some rough averages for other people..