Standard Burger

The burger was delicious. Just what I wanted! It's on the plant based menu with a gluten free option. So I say I'd like the GFO. The server says she can sub the GF bun but it has eggs, is that okay? I said uhhh no it is not. She says they can do a lettuce wrap instead. Awesome sounds great! I get the bill and they charged $1 for the lettuce. Are you kidding me? They took off the bun and just added lettuce. Upcharging for lettuce? I mean $1 is not much to me but it's the principle of the thing really.