Alot of miners are asking the exact same questions pretty much. They don't know if they should keep mining for $0.25 profit or just sell the GPUs or just turn them off temporarily.

The issue with selling them at the moment is they aren't in demand and prices on eBay are very low. I have seen some RX 470/570 GPUs going for as low as $80 USD on eBay without shipping.

You can keep mining but profits are very low, everyday you mine you might risk wearing out some GPU fan or just wearing out the GPU itself.

Hence why for some, its just worth it to just temporarily shut off their rigs and turn them on in the future when the profits are greater.