Agreeing on one appraiser or one agent's valuation at the outset is faster and cheaper than each side retaining their own and negotiating between two numbers later, saving legal fees that otherwise run $800 to $1,500 just to argue over whose number is real.
A neutral process for showings, offers and timeline decisions matters just as much as the number itself. Both spouses typically need to agree on price and on accepting an offer, so an agent who communicates equally with each side in writing avoids the appearance that either spouse is being favoured.
The sale is one decision inside a much bigger process, and treating it as a business transaction rather than an extension of the disagreement is what actually protects both people. Get your hand-reviewed valuation from Joel Dyck.