It seems a lot of low-cost printers these days are switching to ink subscriptions as a source of revenue. This began with ink-jets, where it's all but standard practice, but it also appears to be happening with laser printers. Inks dry out, so there's at least an argument that having new ink cartridges monthly may be an advantage. I don't think that can be justified with toner, unless there's something unusual about it.
I would avoid any printer that requires a toner subscription, especially if the toner is ONLY available as a subscription. A printer that offers toner cartridges for single purchase is the way to go.
I've never had a toner cartridge expire or "go bad", even after years of being installed. If a toner cartridge expires just because it's past the end of the subscription, then that's a needless recurring cost, especially in low-volume uses. Even if the printer costs a bit more up-front, the recurring costs won't be an ongoing drain.