Be going cheap
Definition 1 of 1
Pro Tip 1/3Seasonal Deals
The phrase often relates to seasonal closeouts or stock clearance sales. 
Winter jackets are going cheap since spring is approaching.
Pro Tip 2/3Urgency Implication
Suggests a limited time offer, creating a sense of urgency for buyers. 
Hurry up, smartphones are going cheap this Black Friday!
Pro Tip 3/3Quality Perception
Items going cheap may be perceived as lower quality, even if it's not true. 
These organic apples are going cheap because the store overstocked.