I use AHS for most of my stuff, but I was also recently wondering if there were any other shops in Austin for homebrew ingredients.
AHS is a little pricey when it comes to equipment, unless you manage to get in on a bulk-purchase of something. I got 5 ball-lock kegs this way 2? years ago for $18 each...they weren't "reconditioned," but all that entails is taking them apart to clean them really well, and then replace all of the o-rings.
I bought my 10 lb. CO2 tank from the beverage factory
and saved myself about $40-50 on that one item alone, and I believe I got free shipping with it, too.
I priced-out CO2 refills and found AHS to be one of the most expensive places to have that done last year. Alamo Welding Supply had the second-cheapest CO2 in town back in, but they are the most convenient for me to get to on a work day. Airgas had the cheapest 10-pound refill, but I think they might have required you to exchange the tank or something.
I'm not complaining about AHS, mind you...those guys are all great and willing to spend time answering all your questions (although, this does sometimes mean there is a waiting list when you get there). I'm just saying that the equipment is sometimes a bit expensive compared to other online retailers, and in my case, they are also a bit far away for us Southies (especially since they moved to the shop over to Metric Blvd), and I'd like a slightly more centrally-located place to buy ingredients.