I bought the Diablo III Collector's Edition in May 2012, and two years on it was time for the expansion. I pre-ordered the Reaper of Souls Collector's Edition from Amazon on 1st February 2014, getting it that April for US$79.99.
I pre-ordered my copy of Diablo III: Collector's Edition from Amazon on 14th March 2012. It shipped on 17th May, a day after release, and arrived on the 20th, a Sunday DHL delivery. The game cost US$99.90, with US$19.98 shipping.
Diablo III arrives on 15th May 2012. You can pre-purchase digitally on Battle.net for S$90, while the retail box costs S$89 in Singapore and RM218 in Malaysia. If you prefer the Collector's Edition box, Amazon sells it for about US$100.
OMFG! Blizzard has finally announced Diablo III. Two decades have passed since the demonic Prime Evils, Diablo, Mephisto and Baal, rampaged across Sanctuary to enslave humanity. For those who faced them directly, the memory of that horror still lingers vividly.