Kim Kardashian and Kanye West -- The Rich Just Get Richer

Kim Kardashian and Kanye West just made more than a million bucks in a month, but they're so rich they're not even cashing in ... TMZ has learned.

We broke the story ... Kim and Kanye bought a $9 million, Bel Air, CA mansion on January 30th. It hasn't even been a month, and they've received 3 offers from people who want the estate so badly ... they're willing to pay A LOT more. The highest offer -- $10.5 million.

Sources directly connected to Kim and Kanye tell TMZ ... the couple turned all 3 offers down -- they're already deep in the throes of remodeling and they plan to move in a few months from now. There's a report out that they sold the estate -- not true.

The main house will be 14,000 square feet. After all, they're having a baby.