If you are serious about wearing it for interviews and business school, then resist the temptation to get some hipster suit with super narrow lapels and a skinny tie, with low rise skinny pants hemmed on the short side. That was all a 'don't'. Do yourself a favor and go try some stuff on. It's a fun free activity. Don't buy from the first few places you go until you figure out what you like and what fits. In your price range, you will be looking for stuff on sale, if it's 500 and thats full retail, it's probably not a great suit. I think for someone your age and probably wanting some modern style (ie not a traditional Brooks Brothers looks) you could do worse than a z Zegna, Paul smith, (people here hate Hugo boss, but it will be in your price range and have a modern fit). You might check out H&M, Nordstroms, Saks, etc. But you'll need to search out the sales.