Keurig Classic K50 Single Serve K-Cup Pod Coffee Maker for $69.99 Shipped

Marketing dept. Increasing their margins. No wonder the stock is up 50% in. 6 mos.

$89.99

Tried the code this morning and it did not work. Had
KeurigClassic K50 Rhubarb Progra in cart and got
Sorry, promotion code SLICK30OFF does not apply to any items in your cart.
as the answer

Back down to $59.99 for new

Why does it say $79?
Bait and switch or do they use the Amazon price model, increase
the price as the sales increase?