The game is usually offered at $39.99, so if we can give you ANY advice, it's this. DOWNLOAD IT NOW.
The game is available on PC and Mac and will continue to be available to play even after May 28. It's all yours bb.
The standard version will also include free updates and new career options, like freelancing which was added to The Sims 4 in April.
Download Origin from their website if you have not already.