Hello, ***** PLEASE CHECK YOUR SPAM FOLDER IF YOU WAIT FOR REPLY FROM ME AS MESSAGES LAND IN SPAM FOLDER VERY OFTEN ***** I am keyboard trader and I do keyboard refurbishment whenever I buy & sell keyboards. I can see there are many of keyboards that may require good treatment :) For better "feel", for better sale, or - finally - for better use. Refurbishments included in price: keys cleaning (please note it's not 10 sec cloth wiping, but 2 hours job including keyboard disassembly, washing all keys separately as well as washing keypad), keypad/keys lubing - if required (Yamaha PSR models do require it, and Tyroses do not), pitch bender/modulation wheel lubing, keyboard rubber contacts and keypad contacts cleaning, casing cleaning (again, keyboard is completely disassembled, not only wiped for 10 seconds), speakers and grilles cleaning (including under-grilles area), firmware upgrade to newest revision. --- Refurbishment takes 24 hours --- ... and additional costs: keys replacing (if needed, for example - if they are broken, jagged) - for cost of keys , which usually is 7-10 pounds for each C-E-G-B, or D-F-A, or all blacks, keys repairing (if some of them don't play or are "sticky") - for cost of contacts, which usually is 10 pounds, speakers replacing (if needed = if burnt) - for costs of speakers, casing repair (holes, cracks) plus painting - additional 30 pounds per damage, upper casing lacquering - protects writing against wearing off - additional 30 pounds, buttons repair - from 25 pounds (depending on what broke).