I regret buying my high end Longchamp wallet :(

Problem/Goal: I impulsively bought a 21,000 php Roseau Long Continental Wallet (genuine cowhide leather). It is $362 when converted to dollars.

Context: When I first saw it, I found it really nice, pretty and just so perfect for me. It made my heart really jump and got excited to buy it in a Longchamp physical store in Rustan's. At that time, money is not an issue because I know I have a very huge savings (1.1M in my bank account), so I happily bought it. Now, 9 months later, I found myself with as little as 150,000 php savings in my bank because I splurged irresponsibly :( I know I messed up bigtime and regret it because I thought my savings won't be gone since it's big. Now, I feel so guilty for spending 21,000 php for just a wallet. Yes, I am using it but it's only inside the bag. I know this is kinda stupid but I want to sell it for 30% off just to have a little more money and just save the proceeds. I also realized that having such wallet is not practical. I could just put my money and cards on the inside pockets of my bag.

What do you think? Should I sell it so I could somehow gain back some money? Or just keep it and charge it as a "lesson learned"? Honest advice and opinions please.