What would you actually want to spend on a full setup for 2–4 plants?

Just out of curiosity, if you were starting from scratch and aiming to grow 2 to 4 plants, what would you hope to spend for the full kit? Tent, light, extraction, timer, pots, all the basics.

I’ve been helping a mate price things up and the range is wild online, some say you can do it under £200, others say nothing under £500 is worth touching. Would love to hear what people have actually spent or think is reasonable.