My work colleague (we'll call in Charles) wants to get into FPV and we've been experimenting with a few cheap options. There's now a ridiculuously cheap way to get into it. It all comes from the Chinese copy-house Eachine and the components are crazy-similar.
Assuming a single battery for flight (to start with) and you have a soldering iron or access to one (or live near me).
Eachine E010 £13.01
Pretty much indistinguishable from my Inductrix. Comes with Controller.
Eachine TX01 Camera £21
Eachine VR 007 £41
And that's it.
In the future, you might want to get more batteries and a better charging solution but this is a SUPERB way to get going.