We are completing a long road trip and were on I-80 just East of Pitttsburgh today. I planned a stop in Brookville at the Humphrey Charcoal headquarters to see about buying a few bags of their lump - didn't have room for too many due to the amount of stuff already in our car.
I stopped at their 'Humphrey Industries' building and asked about buying some lump. The sales person I needed to speak with was at the warehouse. She said to come down and she'd show me what was in stock since they had just been mostly cleaned out by a large commercial client. The warehouse is huge but was mostly filled with bags of briquettes. She did have some 5 pound bags of lump that they were probably going to throw out since they were dirty and not saleable. She offered them to me for $2.25 per bag. Their normal price for a 20 pound bag at the warehouse is $12.95. The small bags were good for me since they would pack better in the car. I managed to take 10 bags but she still has some left.
They normally don't sell much from the warehouse, so make contact first if you intend to go there. She said they get their lump from Ohio, Missouri, and Tennessee. It comes in bulk trucks and they package it in Brookville. They make briquets in Brookville also.
There are a few stores in Brookville that also sell their lump - Mikes Supermarket, ACE hardware, and Giant Eagle Grocery. I didn't visit these to check prices.
I love the quality of their lump and have been very happy with the group purchases arranged by @cortguitarman