Sponsored: OPEN Forum, Warby Parker, and the Cost of Goods (And a Giveaway!)
Disclosure: This post is sponsored by American Express’s OPEN Forum, but written by Kat Griffin. We told you last week about the cool new video series from American Express’s OPEN Forum, “Inside Successful Small Businesses,” taking a look at some of the hardest lessons small businesses had to learn. Today, I thought we’d take a…