Currently when buying in bulk, the player only gets a popup that asks if they really want to buy x amount of a widget, with the exception of the purchase moving the player to a higher rental tier.

Use the same popup for purchases that is used for selling where it gives the player the total price. I think this will be needed as the game transitions to a more dynamic economy.

-1 to adding more annoying modal dialogs.

Actually, please disregard this suggestion because I am an idiot. I just noticed that the total price is reflected at the bottom of the screen when you enter the quantity you want to purchase.

Somehow I never noticed that in the last 8 years.

After further thought, I stand by the op. The total price is nice at the bottom, but again, as we transition to a more dynamic economy, it would be useful to see the price per unit as we are buying in bulk. Again, this should only be triggered by the same measure that triggers the current popup confirmation.