I went to go check the raw link and find it in Japanese. I'm not that good at translating, but here is my guess.
I think in the second panel he says:
"I'm not thinking about tricking or giving you a disadvantage, I only want one thing."
"Understanding each other, buying, and even coming to the store again! That's all I want!!"
And then she responds in the third panel saying:
"Then why do you have such a fishy gacha machine in your store?"
And instead of "Nice Nappa" it should be "Oi Nappa!!"
I think that's the basic idea.