A great episode. Stan makes a deal with Mabel that she can't make more profit than him when he goes away to play a money-making game show. I'm really digging the relationship between Mabel and Stan.
The episode has complications, such as how Mabel is too easy-going on Wendy and Soos, allowing Wendy to goof off and Soos to screw things up. The monster in the episode was too uncreative; a goblin that you can't look straight into his eyes. Of course, he's defeated with a mirror, Stan looses all of his money, and Mabel wins the bet. There's a great moral; experience what it's like to be in one's shoes before you start judging them.
Overall, great episode with a flurry of giggles. Gravity Falls seems to never disappoint.