Recent reviews by Ultra

First issue of DLC is lack of content.You can finish it under 3 hours,including all side missions.
Second issue of DLC is paywall for progressing further into the game.You are not able to get any OP levels if you don't own this DLC.
Even if you do own The Raid on Digistruct Peak you still aren't able to unlock OP levels due to obvious paywall.

For older players the DLC was received for free.
But for newer players that are coming due to influx of Borderlands 3 are met with a progress paywall.
Entire game, or rather Handsome collection that includes all DLC and Prequel can be bought for mere 4 $ on some sites.
Even if you don't support business practices of those sites you can get the game extremely cheap during the seasonal sales.
There is no justifying reason why this should be priced at 15 $ at all.

Also if player had OP levels before release of Commander Lilith & the Fight for Sanctuary and didn't claim it for free his OP levels were locked until the purchase.
This is definitely something that I wouldn't expect from Gearbox.
Overall disappointing.