They used to cost rs 5 back when I was there.
For car owner, you only need two washers, one on engine sump bolt and one in dashboard ready for use.
During oil change, ask for old one back and anneal it at your convenience at home or at welder and keep as spare again for next oil change.
Using leather is one of those moronic practices that fall into same ustaadee category of no thermostat valve etc etc.