Gelato and Friends! What Could be Better?

One nice thing about new friends is sometimes, they're so excited to be your friends that they accidentally undercharge you for things!
One time, my roommate and I went to the gelato store in our 'hood. (Well, one of them. This one is the good one: see the picture? That's where you go. It's next to the pig statue).
You won't believe this, but as soon as we stepped into the store, we made friends! There were two boys working, and BOTH of them wanted to be our friends.
Now, my roommate and I are not so good at decisions. (Know what we are good at? Making Friends!). So we started looking at flavors, and realized there were far too many delicious things to eat there. Thankfully, our new friends were there to help! They let us taste everything about ten times. And, while we were tasting, they told us about a brewery we should go to with them. Isn't that nice?
Now, when we finally decided, here was the best part. The cheapest gelato is at this store is 2.95. My roommate and I both got some, so our total should've been around 6 dollars. Somehow, our friends were so excited about meeting us that instead it cost 4 dollars!
I feel bad that our new friends were so distracted they didn't notice they were wrong. I didn't want to make them feel embarrassed about it, so we just took our treats and left. But what great friends!