Hi! I just edited the tier to hopefully make it more clear, but yes, you're absolutely correct. The way Patreon works, is that you get all the previous posts plus the new ones in the month you've pledged. You can read more about it [here]. If you have more questions, please message me on Patreon or contact me via mail (pdrrook@gmail.com) as to not spam the comment section, and I will answer to the best of my abilities.