I’m currently on the legacy hobby plan. Initially, I utilized a machine with 256MB RAM and a 3GB volume, which was covered by the free allowance. Later, I switched to a machine with 133GB RAM and 16x performance for approximately one hour, which cost me around $0.07, and then I deleted it. After removing all apps except for the free builder, I set up a new machine with 256MB RAM and 3GB volume once again. However, it now appears that this usage is being billed instead of being included in the free tier.