Hi @samstonehill. Thanks for introducing me to this tool! My spouse and I have been having a lot of fun with it :)
I have limited my Midjourney account to 15h a month. 5 of which I have already used in 5 days!
Not sure if you are aware, but if you are on the "Standard Plan" you get 15 "fast" hours but unlimited "relaxed" hours. You can switch between the two modes using /fast and /relax. If you are in relaxed mode it takes a little bit longer to render, but it's not too bad - and you can make as many as you want without running out. Hope that helps :) Happy imagining!
RE: Unleashing my wildest architectural dreams with Midjourney: luxury bed designs and so much more...