I saved up my allowance for two months simply to purchase sufficient UC to get the Lucky Spin Royale pass

https://www.scribd.com/document/1007583673/Using-PayPal-and-Card-Safely-for-PUBG-UC-Why-Manabuy-Worked-for-Me-171506

I kept up my allowance for two months simply to buy satisfactory UC to get the Lucky Spin Royale go, making the grind utterly worthy it.