Parameters for higher multiples

Hi all!

Are there any market standards for multiples in terms of growth? Everything I've read says 3-4x multiples aside from tech and they can be above that with consistent long term growth? The reason I'm asking is I'm seeing multiple deals at +4.5x with minimal seller financing meaning nowhere near even 10-20%. Are these just factors of the current market? Or are the brokers over listing the price knowing they'll be negotiated down? In that same breath, is there a reason for lower seller financing? As a searcher it makes me nervous with minimal seller financing as this is a sign the seller may not be confident in long term sustainability. Thank you!