Costco Sale: Jamaica Jaxx Short Sleeve 100% Silk Shirt $16.99 by Rhonda November 15, 2020 6/6/13. Costco has the Jamaica Jaxx Short Sleeve 100% Silk Shirt on sale for $16.99 (after manufacturer’s instant rebate), now through June 9, 2013. That is $3 off Costco’s regular price … 0 FacebookTwitterPinterestEmail