They do give individual feedback to each student, and they ask that you register each student separately.

We got one kid a subscription first, but then jealousy ensued, then we paid for the rest of what we needed. Had to wait for it to go on sale in between, which was aggravating. The regular price is $250.

You can have multiple kids' accounts on the same computer but (oddly) you need different parent email addresses to sign them up.

The Groupon price ($150) is, I think, quite fair. The individual attention via messaging has been outstanding-- questions get answered quickly and cheerfully. This is honestly the most engaging online instruction I've ever seen.