From reading this I think OP was trying to express concern over the possibility of penny-pinching at a detriment to the welfare of the tank inhabitants. IMO that's a moral compass issue more so than a monetary one. If you can't afford to keep the inhabitants happy, sell/give them to someone who can and find a hobby without as much flat maintenance or figure out why your flat maintenance is so high and lower it to where happiness meets monetary ability.
I view 'budget' in this, and any other hobby, as a moving point of reference. Noophysche's are budget combared to Kessil's, and a thousand other examples, but the point moves depending on who you're talking to and what the conversation is around. A budget return pump for a 500g system is going to cost more than higher end return pumps on a 40g system. It's all relative and moving, and kind of a hard conversation to have without very specific points given up front.
I view 'budget' in this, and any other hobby, as a moving point of reference. Noophysche's are budget combared to Kessil's, and a thousand other examples, but the point moves depending on who you're talking to and what the conversation is around. A budget return pump for a 500g system is going to cost more than higher end return pumps on a 40g system. It's all relative and moving, and kind of a hard conversation to have without very specific points given up front.