Let's see what I can offer. I have the 36x18x36 exo terra. I will need 112$ in abg mix alone. and another 50-75 in dried leaves. The external filter pump for the water system is 100$ the mistking will run me another 150-200 (still haven't nailed that one down yet). The egg crate cost 24$ (Bought 2 of them) $12 in PVC pipes, 20 for a pipe cutter. I am figuring $200 for plants. I still have to buy lights. 60 for the lamp and 30$x 4 for led's. (Yes, I am going all out) Also will need heat so there is even more. Probably $50-60 for great stuff. Try finding EVERYTHING you are going to use, price out EVERYTHING and then re-budget. $300 is a great start but probably won't get you to the end.

I am figuring a grand or more (including the tank)by the time it's completely finished and Frogs are out of quarantine and happy. You can do it but it is going to take a while. You will need to plan on spending more money. UNLESS you happen to have a lot of the stuff laying around.

Good luck. Don't get discouraged due to the money and give up. Just know you have some more planning and saving up to do.