Hard to tell, but if you were to replace anything when doing so would be cheaper I think people would be throwing away a lot more.

If you want an economic argument there's no way to sell my free time for anywhere near the market rate on such a short notice.

Sorry, I can't quite parse either of those sentences. Are you able to say them another way, or a simpler way?

I can spend an hour repairing my bicycle tire and get it working for a few years or I can buy several new tires by working more hours.

If everyone did that we would need a lot more bicycle tires.

Edit: If you want a more extreme example. I might be able to afford more socks by doing paid work than I can wash in the same amount of time.

Have you seen the size of the DIY market across Europe?