At least in the past, Excalibur was full of 6-5, but the higher end MGM properties were not. Though, generally the higher limits you're willing the play the better rules you get, so perhaps on a busy holiday weekend, the minimum to get decent rules was $15. Which sucks for players, yeah.
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Congratulations to SuperNiceDog, Guru Winner, who was smart enough to pick
your 7 time champion, Link.