I can still see pangea in stock.
https://www.amazon.com/gp/product/B07GNMFTHZ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1
Edit
Sorry. I just saw your reply.
Pangea just came back in stock, shipping Sept 18th. It appears randomly for maybe half an hour before disappearing again. I ended up choosing this last week when it went in stock for a brief moment, and they actually ended up shipping it yesterday (?!).
Was sick of waiting for Limestone - come join the green side guys ;) https://www.amazon.com/dp/B07GNMFTHZ/ref=cm_sw_r_cp_apa_i_tv-EDbXA9THD3