What one did you buy?

The Airfix model is still around and fairly cheap (I’ve not seen it over £4.00 yet). It denotes an F.3 but was originally released in the early 1960s as an F.1. An original F.1 version of the model would probably command a bit of a premium these days.

Hasegawa and the old Frog company released 1/72 F.6 versions as well (they might have been from the same moulds). Recently, Eastern Express have introduced an F.6 which I assume is the Frog/Hasegawa one back again.

Matchbox did an F.6 too in 1/72 as well.

In larger scales, Airfix have done a beautiful 1/48 scale Lightning F.6 and Aeroclub made a vacform 1/48 scale model.