Best prices I've seen for a while for anyone looking to pick up a G4, and don't mind refurbished/ex-display.
There are from a longstanding UK supplier (not China, like many others on the market at the moment), that I've used for many years.
They have a few different options:
Refurbished Titan grey: £228.98
Refurbished Black leather: £220.94
Ex-display Black leather: £275.76
(The refurbished ones say: "Refurbished Item has had replacement parts to make it operational" which is most likely the known faulty chip/wiring responsible for the bootscreen looping, but not certain...)
Free delivery available too.
90 calendar days warranty only on ex display.