I've bought every iteration of lightning lanes, including my recent September trip, and wouldn't spring for this. $300+ for only one time per ride at DHS? When I was just fine grabbing passes for the things I wanted to go on at less than $50 (ROTR and multipass)? Wild.
I'm sure there's a market for this. But I'm DVC, SINK, and it's not me. The only way I'd even consider it, and it'd definitely impact the amount of trips I take in a year, is if this severely diminished my ability to get lightning lanes for key rides - and the only way to get E tickets was with Premiere LL.
I have seen a lot of FB chatter about letting Deluxe resorts have this for free "like Universal" - I'm not sure if people realize how many Deluxe rooms there are at WDW, or that Universal isn't offering Express at its brand new premier hotel (for now, at least).