Can someone explain this offer to me?

Sorry for the dumb question but what is 150 x Tier 4 class ISO supposed to mean? What could I potentially get?

Comments

150 pieces of your choice of class ISO

150 5k iso bricks of a class u choose and some gold, dont buy it unless u realllllllpy need the iso but even then i wouldn't recommend it

Horrible offers

Only would maybe be good if they dont expire

it's a terrible offer, ignore it

That may be the biggest waste of units I’ve ever seen in this game stay away