Board Thread:Plants vs. Zombies 2/@comment-25154254-20150830061734/@comment-4417029-20150902010708

They probably thought :

"Sir, I just realized Electric Blueberry might end up break the game because it's too overpowered. What should we do?"

"It's simple, we raise the price, therefore people won't buy it. If they insist, we will put the "Rent premium plant feature"

I think that's the case.