Any realtor worth a grain of salt knows DOM is a joke not just Jim. The main reason DOM stats are out there is because people ask for them. Calculating them accurately is nearly impossible. When people ask me I usually say I dont know followed by the statistics say about 50 to 60 days but I beleive 90 to 100 days is probably more accurate.
As far as manipulation goes, relisting may or may not be manipulation. The DOM is representative of how long the home has been on the market under the current listing contract. It’s a legal issue. When the contract expires and the property is unsold a few things can happen.
Extend listing and DOM keeps ticking (no manipulation).
Immediately relist with another agent (No manipulation)
Immediately relist with another agent that is part of the same team(manipulation- one very prominent Carlsbad husband, wife & child team is notorious in this practice)
Immediately relist with same agent (depends- some agents intentionally take short listings 45 to 60 days so they can do this. This is done by a great many of the high volume high profile agents so they can advertise that all their listings sell in 30 days.)
Take off market for at least 30 days and then relist with any agent (no manipulation)
I may have missed a few but it is not a clear cut issue.