Standard kit vs options on early GTEs

Hey folks
Wonder if anyone can help with a link or otherwise...for standard spec and options on the early GTE estate.
For context I’m looking for the usual holy grail; Advance estate pre April 17 when VED changed!!
Few and far between obviously. The two I’ve seen over the last week or two both had the smaller central screen with the physical buttons - I’d assumed the big screen was always standard but clearly not, how much was it as an option might guide me as to whether to try and hold out for one or not!