Demanding a dollar amount and judging marketing campaign's effectiveness at this early stage in the game is pointless. If (s)he made, say, $250 up until this point, that could potentially grow to $2,500 in 2 weeks or $25,000 in in 2 months, all as a result of the same campaign.

The SEO from the influx of new links is just kicking in, the public awareness of the products needs to sink in, customer base is still unstable, etc.

Success or failure at this point is just... unknown.

I'm afraid you'll have to wait for the Forbes article.