votrechien - 8:23 pm on Jun 7, 2013 (gmt 0)
don't underestimate the stupidity of your competitors either!
That's very close to the biggest problem IMO. A lot of sellers only look at:
- Amazon Fees
- Product Costs
- base shipping costs
They either blindly ignore everything else or convince themselves if they can manage to make a small profit using that formula then they will somehow develop such economies of scale they'll be profitable.