The guy from the garage has tried removing the sieze caliper for a good 1 hour apparently to no avail. He offered to by a replacement for £70! But that will make it look weird, brembo 1 side and the other side non brembo. I will be buying the one on ebay myself and planning to refurbish that myself while trying to unseize the caliper. Once I have done that, I will sell that back on ebay hopefully with a profit, if not, I might just upgrade my RX8 brakes although not sure if it will fit since the front discs are 323mm!
PS. I asked the guy about rebuilding it and he said it is not a good option as a rebuild will prob take more time in labour than the cost of the replacement which is £70! Not sure whats seize but I'm interested to know