How long does it take for a realtor to submit an offer?

[John Lee]

It seem like every real estate agent or realtor I meet reluctant to write up low ball offer even with proof of funds. Just wondering how much time does it normally take for one to write up an offer? Or what is their cost to write up an offer? It seem weird that they take the risk of wasted time to show property or talking to investor that might not buy a single property. but reluctant to write up an offer with a small chance that it might get accepted