On the App, it shows Bonus Engine Voucher Upgrades cost at 25 gold.
When I went to purchase it, it was not showing me that cost. I reported it as a bug, and Idc about your display issues, those are your problems not mine. I made my gold purchase specifically for this event to stock up on those vouchers for the rest of the round.
I want the displayed price, i didn't buy them at the incorrect price because I have been repeatedly told by CS that they can not refund any gold. So effed either way.