There was a place near me that has good otoro, mirugai, ama ebi, uni, etc.. once a year on "customer appreciation day" they would have a buffet which included unlimited trips to the sushi bar for 6 pieces of nigiri at a time.. I clocked 11 trips to the sushi bar and each time it was 2 pieces of otoro, 2 pieces of uni, and 2 pieces of mirugai.. 66 pieces of nigiri which on a normal night would have run me about $350
sadly, the good times only lasted a couple years..