Some interesting thoughts and observations. Yes, 'worth'
is a relative term. Lately, for example, a £20 pair of NHS aluminium crutches proved to be
invaluable to me when learning how to walk again (I'd begun walking like a duck, or a limping Charlie Chaplin..post-surgery

). Then there's my old cheapo multimeter- still going strong after twenty years-
one of the most useful tools I've ever owned. It's resolved many potentially expensive problems. Along with some 'Snap-on' spanners, and my 'Snap-on" pivoting torch. (Love good torches and practical tools..

) I've acquired over the years.. such purchases have intrinsic value in the way they have made life easier. But, good experiences (world travel- for instance)..where you can get them..
will last a
lifetime. Whatever they cost is probably money well spent. Contrary to the song: the best things in life are
not (always) free!
As for the Aero-mate- 8th wonder of the modern world though it may be- I'd rather see the Andes, or the Himalayas instead. I Bathed in the 'Blue Lagoon' in Iceland once: it was worth every penny spent getting there. Sacrilege, maybe, but if it were to be spent on a tank..it would have to be in buying and restoring the real 1/1 mccoy. It would be a Daimler Dingo, or a Cromwell..something British, anyway. if the bits can be found or engineered. My own gate guardian.
I agree with Rad that the Tamiya is dated and too expensive. In fact, I don't think it will be too long before Taigen/HL make products of similar quality, judging by their latest T34s and Shermans.
As for feeding the addiction..well I do.. but I'm drawing a few lines, there. After the Cromwell kit I've just ordered from Chris, that's it. I think.

Hmm, but have you seen Chris' own build thread for
the Aero-mate. Take a look. I did, and it's weakening my resistance..

Nah, I can resist that

Do check this thread out though.
viewtopic.php?f=23&t=7729&start=20&hilit=aero+mate
"Get your facts first, and then you can distort them as much as you please"- Mark Twain.