I got mine (or am getting, it's still in shipping) from Amazon! I get most of my kpop merch there and it's rather good quality. ^.^

Try Amazon, they usually have a lot of things Kpop related and they usually have things out fast with pretty quick shipping as well ^^

Amazon has the album with a poster and gift for $21.50 or the album with folded poster, autographed photo, a SHINee postcard, and SHINee sticker for $29.99
Here are the links:
http://www.amazon.com/TAEMIN-SHINee-Mini-Album-Poster/dp/B00MSR2U8I/ref=sr_1_1?ie=UTF8&qid=1408304164&sr=8-1&keywords=Taemin+Ace+album

http://www.amazon.com/Express-shipping-SHINee-official-autograph/dp/B00MRPGGIQ/ref=sr_1_2?ie=UTF8&qid=1408304164&sr=8-2&keywords=Taemin+Ace+album