I have noticed that the same stock will be listed at different prices depending on the source. Why?

For example: JEPQ today

Webull, Seeking Alpha, Market Watch, and Google don't agree on the price of JEPQ. Around 7:30 EDT today, the following prices were given:

Webull – $47.91
Seeking Alpha – $48.00
Market Watch – $48.13
Google – $47.91

I have seen this with other stocks too. Shouldn't they be the same price? Why are they different?