The firm wanted me to promote odds of 4/1 on Manchester United to defeat Arsenal in this Sunday's Premier League fixture.
I did so as I thought it was a nice price to bring in new custom.
And then I looked closer and realised something.
It is more than nice.
A look at the past six Premier League meetings between the two sides indicates that Manchester United are worth a punt at those odds.
Arsenal have failed to win in the six games, only managing to draw once.
Yes, that is five victories for United.
Unfortunately, I am already a BetFred customer so I am ineligible to get the price. If I wasn't already, I would have signed up and whacked down a tenner (ten pounds is the maximum stake allowed in this offer) on United.
You can read the post where I promote the offer at TaylorKnowsBets.com. Alternatively, you can sign up to BetFred and get the 4/1 odds on the company's Massive Odds page.