Today on Reddit: python-scripted crafting guides for levelling Tailoring, Leatherworking, Armorcrafting, Weaponsmithing, and Huntsman. These update based on current trading post prices for materials (using gw2spidy as the cost information source):
http://www.reddit.com/r/Guildwars2/comments/155juq/dynamic_crafting_guide_for_armorcrafting/

Edit: I’ll have a look into whether I can add this as a calculation page to the guild site over the next few days, as it’d be a nice enhancement. If not, I’ll look at porting it over, because I think it’d be a useful set of scripts ;).