Yup, mausoleum is the best place so far. As the others mentioned above it gives a good amount of gold. Not to mention the scales, lockeds and chests. (Im not considering myself a lucky farmer, but ive already looted 2 scales, 2 undying armors and many massive lockeds.) Also, those shiny balanced tokens are raining on floor 5-6 usually. Since ive got everything from the token vendor i needed, im just spending my tokens on balanced bars to sell them, or 10k gold chests and potions. Well, thats all.