Petrol lines replace Teflon hoses

Hello!
After I made my left wheel bearing in front today, I had to find that my petrol lines are totally rusted away and already lose gasoline.
After I asked about new ones at the Audi dealer, cost about 180 euros, I thought that all to Teflon hoses to be converted. Should be cheaper.
Does anyone have any experience with it?
Should last longer and be resistant to rust.


Thank you
mfg mike