I try and shop locally since there is no sales tax in the state of Oregon. There is a place in Bend Oregon that sells panels via the www and they are having a great sale now with some 50% off on large panels. The name of the place is the Solar Store and you can browse their panels and compare specs and prices and they will ship directly to your front door. It might make sense to shop around in your local area to see how the prices in Pa compare with Oregon. www.thesolarstore.com is their web address if your interested.

Any idea on the best places to look for panels?

The price of solar panels has come down in recent months, evidently due to slow sales and over inventory at the warehouses. Some solar power distributors have reduced the prices by as much as 50% to move their supply. Now is a good time to start shopping around for the best prices and get those panels you have been wanting for emergency battery charging.