Look at the main photo in your Ebay link.
It shows a UTFT sketch running on a 320x480 display on the left.
It shows a 240x400 screen on the bottom right.
Now look at the other five photos in the group. They all show a 240x400 display.
Now look at the text.
Tftlcd 3.6-inch touch screen with uno r3
3.6-inch LCD touch screen
Resolution : 480x320
Controller : ili9488
Test code:
ILI9327:
There are several Ebay and AliExpress vendors that use exactly the same mendacious description.
I would not trust any vendor that lies like this.
Find a vendor that has consistent information. e.g. photos of a screen of the correct shape.
Ask on this site. You may find a customer that can recommend your vendor.
Be wary of the "Positive feedback" from Ebay. Never believe the "customer rating" from Aliexpress.
David.