not enough to sustain you, all dailys i've done Buy Blade And Soul Gold are like copper in reward, never seen anything awards much more then that. MAIN quests sometimes give you 5-6 silver but, over all i'm getting this vibe that crafting is a waste of time, and should just be avoided... and i spend mine on crafting and not much else.
Depending on what professions you pick, you could either make a lot of money or very little money. I do most of my dailies every day and bank around 6-7 gold. Doing faction quests in Misty Woods and the water area near Hogshead give you soulstones (around 20 soulstones a day), which you can sell for about 31 silver each which gives you a total of another five or six gold. You could also farm profrane jiangshi essence's right now (5 silver each) because they sell for a decent amount due to many people trying to get their awakened profane weapons. You can also farm ogres in Misty Woods for keys that sell for around 5g each. Crafting pentagonal gems is another good source of income, depending all on the gem you get. So, you're wrong.... there are tons of ways to get money everyday. I bank around 20g a day (end up spending it all because I'm impatient). Just search stuff on the marketplace and check prices every now and then and see what sells and what doesn't.
Because you should retrieve them in the cities from the npc's where there is barely any cost and accept mail at the Vault npc. It really isnt hard and i also had issues dropping weapons but i ran with groups of other players and we traded weapons between us for the ones we needed.