I've been having a hard time finding ammonia to cycle my new 10 gallon, and I noticed I wasn't the only one. Now that I found some, I figured I'd share so others know where to go, too.
Brand Name: Austin's Clear Ammonia
Ingredients: Ammonium Hydroxide (nothing else)
Sold at: I found it at Dollar Tree, other "dollar" stores might carry it as well.
Price: $1.00 for 64 oz
It does not bubble or foam when shaken.
Hope this helps, and happy cycling.