Like Grady said, anything from Wacom is a good option. Alternatively I like Huion as less expensive option while still being good quality. This one is only $30!
Having a tablet for sculpting makes sculpting much more practical. While a mouse can be used, it’s far from ideal. I think of it like a hand saw VS a table saw. Technically I could rip-cut straight boards with a hand saw, but it’s incomparably better to rip-cut straight boards with a circular saw.
If you’re unsure about your capacity for sculpting, maybe wait for next week to watch the courses and live event, try sculpting with your mouse, then decide whether or not to get one. If you end up enjoying sculpting, you’re going to want a tablet.