So I just submitted an LOI on a deal here in FL and Ive got the Brokers telling me what I think is non-sense and id ,like to get others perspective

my advisors told me the standard process for buying a business is LOI --> due diligence --> renegotiate if necessary--> sign contract and close same day

the broker I'm dealing with tells me I need to submit a contract offer and make a deposit so the seller knows I'm serious. I hold him HELL NO. I have outdated financials and that an LOI should be enough

He is saying a deposit is a normal thing

please let me know your perspectives, especially when dealing with business brokers of florida