Notice how I said “most” and not “all”?
I was actually able to sell a few things with profit but most of the stuff is listed for selling at vendor+1c.
I am in tier 2 though, hopefully this improves with tiers and time.
As an example, I can make 12 slot coarse leather packs for 16.7 silver cost, and sell it on the trading post for 19.37 silver. That’s with immediate turnovers, if I was a bit more patient I could reduce the cost and increase the sale price.
That is a very funny example, actually. If you sell it for 19.37, you pay 2.91 in TP fees, which means you are getting 16.46 per bag. Considering the 16.7 cost you mentioned (not sure what you included there - leather and the rune? - and how much the tier 3 rune of holding costs), you are actually selling your bags at a loss.
I hope you didn’t buy that leather. :)
Selling bags at a loss is perfectly fine (if a bit wasteful leather-wise), if you are leveling up by making those bags but if not, it sounds like you would be better off just selling that leather. :) Or using that leather to create less leather intensive items that will actually level you up and sell those. At a loss :)
That’s with immediate turnovers, if I was a bit more patient I could reduce the cost and increase the sale price.
Looking at http://www.gw2spidy.com and it doesn’t seem like you’d be able to increase the sale price too much - selling offers very rarely exceeded 19.5 yesterday and not by much, always under 20 in any case.
Last edit. :) According to the wiki, the Rune of Holding for those 12 slot bags costs 14.8, so it does look like you included leather in your 16.7 cost.