With as many people playing these R/U's these days, one can frontload for a nice little profit. Yeah the 500 will make a better play opposed to the 100 but 100's R/Us could work if you had gotten in early. Even that NRMG, even though it hasnt hit the DL went up a couple hundred %.
I, by luck bought 17k of SWNE the day before the DL for a R/M play and I made several thousand off of nothing.