Below $150 for me. I usually end up spending alot of money, for plants and gravel and food etc.
I re-arrange my tank every month and usually i get new plants, and this month it is going to be somwhere in the 1000$ since i am getting a new tank
I put 20, but it's probably much less than that now. My declor is 24, and that lasts about 2 months. Now that I mix my own ferts from dry chemicals, that price is next to nothing in comparison to how long is lasts. When I was stocking my tank with plants, it was 15-20 every few weeks, but I don't anticipate needing anything in the near future.