Hmm so far I only know of 2 shops in SG that sell the genuine ones. HMV (damn ex, I bought one for I think 39.90 or 49.90), and this shop at Far East that sells all the band shirts/hoodies/belt buckles/everything. Price is about 40+ for old designs, they don't seem to bring in stock anymore. I think your best bet for genuine shirts would be online(I like buying from Amazon, its trustworthy, or hottopic if you want but I don't like them). The Avenged Sevenfold shop which is under Bravado will always send me email saying I never enter CVV code, when they never even ask me for it. Quite annoying but yeah, buy online if you can, its cheaper.