Thanks to the OP for this thread, great idea.
We should try and compile a list of info that should be the standard on all juice bottles. The PG/VG ratio, nic. level, bottle size, flavor, date made, exp. date, company name, all absolutely NEED to be on the bottle. If its a 3mL bottle, you may not be able to fit a lot of info, but figure it out, make something that works. I can't stand getting a juice that(one I got 2 days ago) has a round red garage sale sticker on it with an abbreviated flavor name and a number on it(nic level? who knows). If I don't remember, how do I know what it is. If its given to someone else, how do they know?
I like the idea of samples. I got some juice from pinkspot, and they included a sample of raspberry lemonade (with same nic level as the juices I ordered). Turned out, I would never have ordered that but I now order 30mL bottles of it, its one of my favorites. On the other end, I received a sample bottle that was 24mg nic, and the juice I ordered was 12mg. I'm not going to vape something that is double my strength. Common sense.
I could go on and on, but all the important points were already mentioned. Thanks everyone.