What you suspect is correct

The positives: the house is cheap and built within a month. The negatives: the quote is so high level it basically says we'll build a house made of wood it'll have windows and doors for x amount. No breakdown of what the wood costs or what material the windows are, what toilet seats or basins and what the prices are of these items. Only after you've paid do they send you 1 partially correct image of the house. The rails of the cupboards are weak and breaks within the first 2 or so months. The plumber didn't connect a water pipe proparly in our wooden wall and caused quite significant damage, which took them at least a week and a half to come and fix, partially, then a month later to finish the repairs. The light switches had to be replaced within 3 months. The shower is the cheapest one they could find and started cracking. When I raised this I was ignored. The insolation is pathetic, and I read the ones they install is not SABS approved anymore since around lockdown. The toilet seats I had to replace at my own cost. I have to repaint the house within 3 months because the cladding shrunk and now the wood is visible. Finally the service you get after you've paid and they've left the premis is basically non-existent. Good luck if I could go back I would go another route.