Sorry for raising this thread from the dead... but I've come across it countless times when searching for answers to my gas (vendor) related questions, so I thought it worth filling in a few details about gas vendor questions that seemed somewhat unanswered previously.
I headed out the other day to get my tanks (Beer gas AND CO2) filled the other day for the first time (bought the CO2 full from a HBS and JUST got beer gas tank earlier in the week). I started out hitting up a Keen (West Chester location), as they came up on google maps as being pretty close. I get there, and the guy is a complete prick and has no clue what Beer gas is - I explained the whole Nitrogen / CO2 mix deal and he's like "oh Guiness Gas" (uhh, yeah!). So on top of lousy customer service, they also only do swaps. I took a look at the other tanks, and they all looked like they had seen their better days. On that note, I walked out and took my (empty) tanks with me.
Next, I headed to G&E, because I had a few errands to run in that neck of the woods anyway (DMV, and a few things from BJs). I come in with both tanks and the guys were very knowledgeable. I decided to take a little different approach and said I needed N/CO2 mix for the one tank, and the guy says "ah, Beer gas" which made me feel right at ease that I was at the right place. The prices were very reasonable (26 for both tanks from completely empty - $11 for CO2 and $15 for beer gas). They also do fill (not swap) so for those like me that have brand new tanks and don't want to get someone else's rusted out banged up tank, definitely a good place to go.
I apparently went on the "wrong" day of the week though, as they had just run out of beer gas earlier that day. They had a truck on the way already (from Wilmington), and told me that if I came back in an hour, they'd have it filled for me. I swung over to BJs and did some shopping and before I was even done, they went out of their way to call me and let me know that the tank was filled. THAT is service, and something you don't hear about very often! They won a return customer for life!
So, G&E is totally the place to go in my opinion. They're right off of 95, have great prices, knowledgeable staff, beer gas, and they don't swap. If you're looking for a vendor, it's worth checking out at the very least!
281 Airport Road, New Castle, DE 19720-1540