Question on 2% rule of thumb mentioned in podcasts.

[Red Peterson]

Heard it more than once in podcasts that a good rule of thumb is getting a property rented out for 2% of the purchase price. Question: which market is this applicable? Is this only on certain states and expensive properties? Has anyone been able to get like $2k rent from a 100k property or something similar in this price range? Thank you in advance for all inputs.😊