Is a RP4P still relevant? What price?

I've always been smitten with the Retroid Pocket 4 Pro, especially in the transparent colors.

But with the 5 being out with an oled, and the 4 being kind of old at this point, I'm wondering if it's worth picking up? What price do you think it's worth getting over the RP5?

I have an RoG Ally and a switch OLED so I'm mostly interested in GC and PS2 emulation and older emulation.