Las Vegas is the buffet capital of the world. It just doesn't make sense to pay $11 for a buffet that is so limited. Yes, they have a long salad bar and they have 3 soups and 3 pastas, some muffins and some soft-swirl ice cream.
For the same price you can go to any of a dozen casinos and have all that and a lot more. Most of the buffets feature carving stations with turkey, ham or beef. They also have Mexican or Chinese food and usually piles of fresh cut melons, not to mention a tempting array of desserts. The off-Strip casinos are about the same price as Sweet Tomatoes.
The only benefit I see to Sweet Tomatoes is that it isn't in a casino which is a plus for families. To me it's not worth the money.