Newbie question about FatShark goggles

I just purchased the Vortex 250 quadcopter. I plan to purchase the Fatshark Dominator V3 goggles. Do I need to purchase the Fatshark receiver module or is that already on my quad?

The goggles require a receiver module that fits in the goggles themselves.
Usually in the uk it would be the 5.8 ghz one. Fat shark one is about £20.
Possibly worth considering the true d v 3 diversity module about £70.
On the quad would be the video transmitter (vtx )
I think UT may have a guide to fpv.

Thank you very very much. You are very knowledgeable and I appreciate your response.

the fatshark goggle is so expensive. can not afford for that…