I called the LV boutique back in October and it was about $200 something plus tax just the handels and for everything leather (trim, leaf thingies) $400 and something.
I asked that question tonight when I was at LV store. To replace the trim and the handles was $385. I forgot about the leaf, but I do agree that it is better to buy a new speedy.
I would rather save $200 and replace all the leather for just 400 or whatever that amount was. You could do a lot with $200 and if the canvas is in perfect condition it will be like getting a brand new bag, absolutely no different except you will not be two hundred dollars lighter. I just got my new mono speedy 30 last week and if I ever need any of it redone I would sooner opt for that then get a new one, I'd be attached to it as well.
I got the handles, chads (where the handles attached), pull tab and leaf - all for $145.00. Only thing not replaced was the piping. My bag looked gorgeous!