Over here it's 1.99. EA seems to manage their sales by region. In the Singapore store, the developer is EA Swiss Sarl; in the US store, the seller is Electronic Arts Inc.
Something like this happened back in december, where Shift 2 was free in America, yet everywhere else, Shift 1 was free
Unfortunately EAs regional prices are one of the main reasons to dislike them. There's plenty of examples from steam here, it's a shame to see them following the same pattern on the app store.