Westerners will know this game best as Final Fantasy Adventure or Mystic Quest.
Trailer: https://www.youtube.com/watch?v=m7TqD87JfWE
Website: http://www.jp.square-enix.com/seiken/
They're estimating 1,400 Yen for the price, but it's not finalized yet: http://dengekionline.com/elem/000/001/116/1116424/
Thanks to duckroll, ULTROS, mao2, Raven777, and crinale for the information.
Update
Additional information:
Trailer: https://www.youtube.com/watch?v=m7TqD87JfWE
Website: http://www.jp.square-enix.com/seiken/
They're estimating 1,400 Yen for the price, but it's not finalized yet: http://dengekionline.com/elem/000/001/116/1116424/
Thanks to duckroll, ULTROS, mao2, Raven777, and crinale for the information.
Update
Additional information:
The Dengeki interview is interesting. I've only had time to skim it a little, but the guy in charge says that they're remaking the first game in 3D to act as a foundation for more remakes in the series. Mainly so they can have all the older titles from SD1-3 on the same platforms in 3D sharing assets and whatnot, and it can pave the way for a SD5 possibly. They're taking into consideration the demands of fans with the coming anniversary next year. They're also planning on releasing this remake on PS4 in future, but they'll only work on that after releasing the portable ones. For a downloadable stand alone title like this, he estimates the price will be about 1400yen. So 10-15 bucks.