I got a trial box last week and it didn't have any of the house juices, it did have one that was discontinued and one that I would expect to see in a gas station but all the rest were name brand liquids that were easy to find for sale. 4 of the 6 were pretty good but I wouldn't order them again because they have too much PG.
I changed my profile right after signing up and a couple days before my box shipped, somehow they ignored my first change(switch to 3mg for high VG) but implemented my second change(added fruity, 5 of 6 were fruity). I'm thinking about getting a second box if they can assure me that it will be high vg but I don't use much 3 mg so I'm not sure.
Zamplebox is the most economical service I've seen but some of the others like drip club and craft vapery seem to have a better reputation for getting juice that people like to them.