So last monday when I was doing last minute arenas, I noticed a lot of people giving away teams.(so they can join one for points I assume) I picked up 2 2v2 teams for free, and today I figured what the heck, why not sell em for gold. Both of them were around 1500 rating and I got 50g each(30 cheaper than a new team). Sold almost immediatly.
Not a scam, but an easy way to make money. Expecially if you're one of those people who like to sit around in trade chat all day