it depends on where you live. i think they do their orders by region, or state, or zip code. i've seen some people say 10 days or less on every order where mine have ALWAYS taken over 2 weeks and closer to three, but that's not THE slowest... hemp depot takes closer to a month and i think actually went over it once in part due to snail mail i'm sure. slow shipping is just an inconvenience. as long as you get your gear, that's all that matters and after losing a $120 from FORMERLY 7-10 day doc, i'd rather get my gear late than not at all.
maybe they ship by order received too and those that get 10 day orders are placing them 1st thing friday for each newsletter where i think i usually do it at the last minute on sunday.