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Talk about a last ditch effort!

Lamar Odom is trying to save his marriage, and he thinks surprising wife Khloe Kardashian with an expensive anniversary gift is the way to do it, TMZ reports.

The couple's four year anniversary is today.

Apparently, the basketball star plans on spending "well over $100K" on a present for his Mrs. and whisking her away to Santa Barbara for a romantic getaway. Problem is, the reality star isn't budging on her ultimatum that her hubby seek treatment for his substance abuse... or she's pulling the plug on their union.

The Keeping Up with the Kardashians star seems to be reaching her breaking point with the relationship, and tellingly dropped the Odom from her name on Twitter before posting a cryptic quote from Alice in Wonderland to her account.

"The Mad Hatter: Have I gone mad? Alice: I'm afraid so. You're entirely bonkers. But I'll tell you a secret. All the best people are," the quote read.

It will be interesting to see how their special day unfolds!