You should be able to get one fairly easily if you just make a point to get online and buy the first day they're available. I think they sell out in like a week generally.
As for the late season vs. early comment, it just depends on your area. Unless you have "THE SPOT" (variety of awesome food sources, cover, LOW PRESSURE), late season can be pretty discouraging. I myself prefer early season just because they haven't been pressured yet. My hunting areas get hit extremely hard during the shotgun seasons which usually makes the truly mature animals go nocturnal for the rest of the season, even in the brutal cold.