The thing I like about Brickwarriors the most, and something i wish they advertised more, is the mystery packs. They're 5 dollars, or 10 for the big pack, but you get 15 pieces (or 30) that are overstocked, slightly mismolded but still functional, odd colors, or unreleased. You can either get one that has no specification, or the ones the focus on fantasy, medieval, or WW/Modern Warfare. That many parts for that low of a price is absolutely ridiculous.
A screenshot of the page.