I thought a cord was 8’ x 4’x 2’.
A “rick” is 8x4x2. A “cord” is 8x4x4... At least that’s how we define it in middle Tennessee. I’ve not had to buy firewood for so long that I’d be afraid to guess at the cost. Last I paid was $25 per rick.
Probably a regional distinction. In recent years here in Upstate NY, that's a "face cord", basically one stacked rank 8' wide, 4' high, and one roughly 18-20" piece deep. Three of those, thus 6'x4'x5' is what's sold as a "full cord". At least by the local firewood services.
Then again, unstacked (cut and split) firewood is ordered and delivered by the truckload or partial truckload, and "cord" definitions are secondary.