I would definitely buy more of these lipsticks, I think they cost me around $2.50 each which is the probably the cheapest cosmetic item I have ever owned. I also bought three E.L.F brushes from nonpareilboutique.com which were about $3.60 each. I haven't had the chance to try them out yet but they're super soft. I will have a review on them soon!
Let me know if you have tried NYX lipsticks and what you thought of them.