In Pattaya, everything is available, just a little less than in Bangkok. Bangkok has the well known MBK as large shopping mall where you can buy knock offs or fakes, Pattaya has "Mikes Shopping mall a long beach road" or Pattaya's night bazaar (which in contradiction to the name is mostly open during the day). A long beach road there are also some shops that sell the most popular fake products. If you need sunglasses, there is always someone available along beach road to sell you some fake sunglasses. Don't pay too much! The quality is good only for a few weeks :)