That opinion is similar to mine, but it depends a lot on the OPs abilities, desires, and intended use of the game.
If a quick flip is intended, a replacement board might be the best choice. Selling off the original board, intact and unharmed, but not working, would offset the cost of a replacement.
If the OP can't diagnose/troubleshoot, for whatever reason, sending it out is going to be the most cost-efficient choice; it'll be less than replacing it with aftermarket, but that does take some time.
And, if skills on diagnosis/troubleshooting are weak, it's likely that the OP will do more damage trying to repair it than they realize, potentially taking a single problem, and introducing several more.
Do you want it quick, or do you want it cheap? Usually, cannot have both.