"well, gundam just told me that they either replaced the old center pieces or they just sewed the new ones over the old ones..."

he also said that it cost him around 600 bux. But my guess is that the cost will vary depending on the shop and how much of an asshole they are. (for some reason chicago shops are mostly owned by assholes that ask for WAAAAY too much, esp when they dont know how to do it).