Walmart offers the Mainstays Dishwasher-Safe 20" Griddle for $16.99. Opt for in-store pickup to avoid the $5.99 shipping fee. That's $3 under last month's mention and a savings of $7. It features adjustable temperature control and a 20" x 10.5" non-stick cooking surface.
With these companies, it might be easier than you think to negotiate your monthly bill down.