Yes, the caterer usually has a price sheet that gives the prices of linens for each table. Most will include linens on the buffett table, cake table, guest book table and head table. Of course there is charge if you want another color besides white.....
I don't know about the Henckles knives, but I do know that Pampered Chef knives are good quality. I love mine!
This is the company that I am using for linens. They are 1/2 the price of the local company that I was looking into and they ship directly to the venue.