I'm one of the folks with an AC4TV (Chinese? Not sure, mass produced thingy anyway).
Anyway, at ~£150 for a practice valve amp, and the tones it gave out, it felt like a steal...
Mine's got 4W, 1W and 1/4W settings - I can use 1/4W at the weekend (I like the volume on around 3/4 to get the tone I want) but not evenings during the week. I don't feel comfortable using the 1W for anything other than sparkly clean low volumes, and the 4W is just a hoot for all concerned :lol:
The rest of the time I'm using a modellor, which is far more versatile, and once both rigs are "cooking" is just as enjoyable to play through - the advantage the modellor has is that it can get the enjoyment down to seriously managable volumes...
I've tried an overdrive pedal for "lower volume" work on the AC4TV - but, to be honest, for me, using a valve amp like that sounds utterly shytte compared to what comes out of my modellors. I've even tried the modellors through the AC4TV - better than pedals, but sucks in comparison to either the modellor through the desk or the AC4TV driven at least 1/2 way on the volume (and it's hit its neighbour worrying loudness by then).
I love the tone from the AC4TV, especially the 1W setting, 3/4 volume. But I really couldn't have justified going over £200 for a "luxury" item with my current amount of kit and resources.
If I was going to gig, I'd probably be looking at the same sort of amp (no master) that I could run at full tilt and control via the guitar without pedals (I'm guessing that would be ~18W max based on the gigs I used to do with a 50W master vol amp). For that, I'd be prepared to spend sensible money to get a class amp... but I'm not planning on gigging...
My gut feeling is that folks like me might be your possible market... But, personally, if I was gonna start spending the amount you'd need to break even, I'd be wanting a giggable amp, so I wouldn't be thinking 1W.
So, sadly, on this one I had to vote "Not interested" in buying such a thing. I am very interested in what you're doing, and if I lived somewhere I could play a decent amp at a decent volume I'd have been talking to several of you guys already... I could justify ptp to myself nowadays, but not if I couldn't ever use it to it's potential :(