Think most of those prices are a tad conservative...
AP's new are £1200+VAT
Marchesini's £1000
Pierobon frame over £200
Carbon bodywork and paint over £3000
Rearsets - Well I priced up some RS ones for my 999 and with discount they were in excess of £1300!!
Technosel seat pad (RS) around £400
That's just a few bits!