My DS is coming towards the end of his 4 year apprenticeship, his take home pay is 1.6k. He pays £200 'keep' and covers his own personal bills. It used to be £100 per month when he was earning less. I know it's not a lot but he is saving hard for his own property and we'd still have this size home and these costs without him here, so I consider them our costs not his. In his 4 years he has saved just over £50k which he'll definitely need which house prices as they are.