Just watching Homes under the Hammer, a guilty pleasure as it's easier to see other people sorting houses, rather than sorting mine myself.
There's a house where they've replaced the boiler, kitchen, bathroom, full refurbishment, new windows, doors, etc, and spent £12k. And they had to get trades in for some things.
This is kinda typical of the costs quoted on this show, and I get the budget is low if you're DIYing it, but surely the materials alone would be well over that? How do they do it?!