I am with Larry on this one. If you can't replace the seals yourself and are looking at dropping close to $600. I'd say find another shop and for a few more Franklins get a complete valve job.
1994 E500 (MY SUNDAY DRIVER)
1993 190E SPORTLINE LE W/ M104 SWAP
2000 BMW 528I (WIFEY'S CAR)
"Excuses are crutches for the unfounded."