Help with MySQL setup

Please ask all questions before bidding. This is on a Linux system. I figured out how to get the search working in this. Please rebid on helping to get the markup working. I will end this project if I happen to get that working also this weekend. I only require the help to get the markup working. I would like to be able to set the % added to the dealer column and be able to change it at any time. If the user enters part number 10-0000 and I preset a 15% mark-up. (Note: our cost is 887.90) They will get on the page Your Cost: $1,021.09 Retail: $1,057.02 Type: Set Catalog Page #: 11 Description : CSV file that will be imported to the database. 10-0000,887.90,1057.02,SET, 11,S&S ENGINE CASE SET 10-0032,162.90,232.71,KIT, 22,S&S CAM COVER KIT 10-0033,164.90,235.57,KIT, 22,S&S CAM COVER KIT 10-0034,1575,1875,KIT, 441,S&S OHV ALTERNATOR-GENERATOR CASE SET 10-0035,1250,1488.10,KIT, 441,S&S OHV ALTERNATOR-GENERATOR CASE SET 10-0036,1389,1653.57,SET, 778,S.T.D. ENGINE CASE SET 10-0038,1035,1232.14,KIT, 443,"S&S STROKER FLYWHEEL ASSEMBLY, 4-5/8""" 10-0040,89.90,132.21,EA, 22,"CAM COVER, CHROME" 10-0042,149.90,214.14,EA, 454,"S&S CAM COVER, STOCK" 10-0050,275.03,371.66,EA, 37,"OE CYLINDER HEAD, FRONT, SILVER" 10-0066,124.90,178.43,EA, 449,CAM COVER 10-0067,124.90,178.43,EA, 454,CAST CAM COVER WITH 4 FIN 10-0080,48.94,81.57,EA, 22,"CAM COVER, CHROME, SEAL INCLUDED" 10-0088,89.90,132.21,EA, 22,"CAM COVER, POLISHED" 10-0095,89.90,132.21,PR, 463,"TAPPET BLOCKS, FRONT & REAR, CHROME"