Cheeseburgers are $6 and can be topped with a bunch of different options. I was out with Dan. Mine: Lettuce, Tomato, fried onions and American cheese cooked medium rare. Dan: Raw onion and American, also medium rare. The burger comes out on a large white roll, but the bread still can't contain the meat. As I bit into it, the juices began to flow. It was delicious meat and cooked as I ordered. Half way though my burger, it was a mess that's falling apart, and I had a big smile on my face.
We also ordered steak fries and fried zucchini. The fries were standard, and the fried zucchini was a huge order of a surprisingly tasty app. But we should have skipped these and focused on the burger; it was a lot of food.
Beer is pretty standard and nothing special. There are five or so taps; Stella, Yeungling, Miller Lite, Bud, Heineken were all represented, if I remember correctly. $5 for a pint of Stella isn't bad at all.
Most of the reviews on Yelp for Rossi's are silly. If you read most of them, most of the write-ups are about soda and topping prices. If you don't like that, don't get soda. And even with four or five toppings, the burger prices are still below average.
The bartender was nice and attentive, and even warned us that the kitchen was going to be closing down early so that we had enough time to get our order in. He was a fun guy. This place has a weird, but hometown atmosphere.
Bottom Line: The hours of 5-10pm 6 days a week are a downside. This place is still awesome, and completely worth the drive from Philly to try out this burger, which is surely a challenge to finish. I'm looking forward to my next attempt.