I stored up my allowance for two months just to acquire enough UC to get the Lucky Spin Royale skip
https://www.scribd.com/document/1074360768/My-First-PUBG-Mobile-UC-Top-Up-Story-Instant-Delivery-and-Discounts-199113
I stored up my allowance for 2 months simply to buy adequate UC to get the Lucky Spin Royale flow, making the grind tremendously price it.