Walmart offers the Ozark Trail 3-Piece Plant Oil Cast Iron Skillet Set for $19.99. Opt for in-store pickup to avoid the $5.99 shipping charge. That's the lowest price we could find by $6, although we saw them for $2 less last July. The set includes three plant oil pre-seasoned pans measuring 8", 10.5", and 12".
With these companies, it might be easier than you think to negotiate your monthly bill down.