We worked out how much we would have spent on our other children using disposables and it came to around £400 ish

Really??!

If a baby used an average of 5.5 nappies every 24 hours you would get through 5000 nappies in 2.5 years.

If 5000 nappies cost £400 then each nappy would have to cost 0.08p each…....................