May 25 (Reuters) - Global Fortune Investment Ltd GFI.AX :
* ESTIMATES FY GROSS MARGIN AT 8.56 PCT
* ESTIMATES COST OF SALES OF A$7.9 MILLION FOR FY ENDING 30 JUNE 2018
* ESTIMATES TO ACHIEVE SALES REVENUE OF ABOUT OF A$8.7 MILLION FOR FINANCIAL YEAR ENDED 30 JUNE 2018