My guess is that this is a cost cutting tool, since I guarantee that Tavelocity etc. take a bigger dollar amount from the Frontier ticket than the value of 50% of the flight's length in ER miles.

As for the URL, as was pointed out earlier, flyfrontier.com has worked for years now. I've used it in place of frontierairlines.com for most of the past five years (though, thanks to being based out of Austin now and parents putting everything on their WN RR card, I've been flying Southwest more recently).

The decrease in reward mile prices is a welcome somewhat-blast-from-the-past; in 2008 or thereabouts I booked a RT flight for 15k miles (one-ways were 10k).

Also, I thought that all ER reward tickets in recent history were de facto Economy tix. I can almost swear that I saw the $ sign next to checking bags #1 and #2 on the F9 site when I checked in for my most recent (FAI-DEN) flight with them. I'm not complaining or anything...12.5k miles for a 2500-mile, $210-ish one-way is a good deal in my book.