Share a square
If a square to yourself is more than you want to spend, join someone else's for $10.00. You go on the register as a Keeper of that square alongside them, permanently, exactly like anyone else.
A square holds up to 10 Keepers. A classroom, a team, a group of friends — all of you on the same real ground, all of you named. Sharing is how anyone gets in; it is not a lesser kind of keeping.
Nothing open to join right now — every holding is either full or already yours. New ones appear as squares are claimed.