Found this korean excel sheet that lists prices for every kwaka part no. With a bit of google currency converter (just type "convert x south korean won into australian dollars" into google) it gives a very rough indication of what parts are worth.
Example, part no. 92049-1313 - Head Stem dust seal
7000 won = $9.73566178
Race Replica quote = $11.somethingorother
http://www.allbike.co.kr/service/kawasaki_part_price.xls