There are a number of options for folding bikes on Amazon, but a lot of them have questionable reviews, many of them are well over 400$, and most are around 30 pounds (I'm not the strongest guy out there, and won't be gaining that much muscle between now and March 30th). The max I'm willing to spend on a bicycle to take with me on my trip is about 400$, preferably a little less.
For example, this Kent Compact 16 Aluminum Folding Bike (16-Inch Wheels) is 25 pounds at 160$. It has 12 reviews and an average rating of 3.3. Here is a video on YouTube of someone folding up an earlier model Kent bike.
Maybe I should splurge and try for a considerly pricier brand yet (hopefully) lighter and more compact, such as Dahon?