For comparison, the combined usual sale prices of all 6 games around 90USD so from that perspective it's a good deal. If you don't care about the 2 Tales games then the other 4 games are usually 55USD so it's not as enticing.
But there's other discounts that can make it worthwhile even if you don't care about the Tales games:
To break it down by platform, owning any of these Borderlands games digitally on Xbox “automatically” entitles you to the new collection for just $30. Own any of them digitally on Steam and they’ll be subtracted from the total cost. Finally, owning either Borderlands 3, the Handsome Jack Collection, or the Borderlands: Game of the Year edition digitally or physically on PlayStation will let you access a $30 discount by launching one of them and following the in-game instructions.
If you own something like BL2 digitally then the rest of the collection for $30 is also fantastic value on console. Not sure how good the Steam value will be since it sounds like a subtraction but might also be worthwhile.