Epiphone Gothic SG ~ £200
Korg KP2 ~ £220
Fernandes Sustainer ~ £130
BKP Nailbomb ~ £100
MXR Phase 90 ~ £80
===================
Total = £730
(I couldn't think of a "mastercard" style punchline.)
And that's assuming he did all of the work himself.
I do hope he gets at least £500 back for it. Playability wise, if it wasn't a fantastic example of a Gothic SG he wouldn't have invested so much money in it... I hope.