As pointed out above, they sell each test separately. If I am not mistaken, in the master test kit you may get smaller bottles of the various reagents than you will in the individual test kits. You may want to check out how much product you are getting for the money in the master kit as opposed to the individual test kits.
When I am cycling a tank, I use a lot of ammonia and nitrite tests. In general practice, I go heavily on pH and nitrate. kH is important for I work with well water that is changable, but I can do with a tiny bottle. gH is not very important. I like having the salt test from AP - it is a good one and not very expensive. It lasts a loooong time. It is far easier and cheaper to only buy the pieces of the kit that you need as you need them - they do not get too old and you spend less money.
Besides - it is a rare dip strip that does ammonia!
I have been very disappointed in our local PetSmarts, and now PetCos.....they have begun to discontinue a very large amount of the fish products available in store. They seem to want customers to use the internet for orders for anything other than the common fish flake food and "goldfish bowls".

I have had to buy my last set of tests from a mom&pop shop that will order them in for me, as well as the various treatments (PArasite Clear, airline tubing, bio-media etc. too).
I hope your new digs in Texas are good for you and your fishes (kitties, too! )>^..^<