re-chrome?

If your talking about the die cast vent window frames, expect to pay a good plater ~ 150 each. A lot of hand work is required. Many times the plater will completely grind away the recessed areas. Die cast is difficult to plate, depending on the condiditon, pits require multiple copper plating and polishing. Bumpers tend to run about 150 for really good plating.
 
bumpers

I've seen the cheap repro bumpers begin to rust in about 1 year. I think its worth it to spend a little more upfront than have to redo it later. You will never regret spending a little more but you will regret spending too little.