Timing chain and rails done at a shop will probably be about a $1K job. Not that bad considering the alternative. If you let it go till it dies expect the repair bill to be $4-$5K.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.