Jordana is made by Milani, so a lot of their products are the same but Jordana is cheaper! The places to find Jordana most often is Walgreens or Kmart, otherwise some beauty supply shops carry it and very rarely you might find it at other drug stores.
Another good but cheap brand is Essence. They are a German brand and only carried at Ulta.; You can order online of course, but I recommend going to Ulta if you have one nearby, since they never put the limited edition stuff online.
Also Forever 21 has cheap makeup that's good. A lot of it is made by ELF and sometimes the palettes or packaging even looks identical. In that case you're better off with ELF since there is a little mark-up. But they also have some really nice palettes and other products that are exclusive to F21, and don't forget to check out the nail polish!
Lastly, I love Big Lots and a store that's only in New England, Ocean State Job Lot. They get a lot of discontinued makeup but also when the company makes too much limited edition stuff it winds up there. I got two bottles of Sally Hansen Hidden Treasure a year after the frenzy, at Ocean State Job Lot for only $1.50 each!!!!
I'm jealous of people who have a Ross, Meijer, HEB, Harmon (or Bed Bath and Beyond with a Harmon beauty section), and I'm probably forgetting a few other places, but I've heard of great makeup/nail polish bargains at these places too.