Other than your bad trust indexes
I strongly support your idea and I have been implementing a milder version (in terms of flexibility) in the last few weeks.
My experience in this forum:
The sellers hate me
, they do everything to earn their unfair share of the gpu mining boom days, excusing me of trolling and ruining their embarrassing threads in which they are trying to hunt fools and noobs, by giving them false data and info.
In local(Iran's) market:
We got a lot of noobs and newcomers to mining industry, unemployment is high and our national fiat currency is always under high pressure form both political and economical sides. Once cryptos begun to rise, a lot of people harshed and opportunists in the gpu market found it a historical moment for sucking the last penies of the poor's who have come to take part and get their share. Overnight prices doubled and tripled and more ... it was and yet it is one of the most disgusting scenes I have ever seen in last 5 years in crypto ecosystem.
In International market:
Chinese are evil. This is all I have to say about this snikky things call themselves 'merchants' in Alibaba, they have no sense of mercy about each other and about the poor customers. They are scammers too and act like a colony of wild bees, coherently, and very noisy.
But the great satans are AMD and NVIDIA and to change the game one should take these two corrupted corporates down. They are hypocrites, they play and take advantage illegally and denounce any responsibility. They like 'oh ... we hate miners ... we recommend (to whom?) focusing on the gamers ... we have no strategy to understand our gpus as a device for anything other than rendering games ... we are very dumb ... we don't send gpus underground ... we are in love with gamers ... we are fools'
So, bad days for miners despite the figures and the numbers, very bad days when it comes to keep your farm's share in the network in a reasonable threshold.
I have no practical solution other than what you have suggested: stop buying overpriced stuff, which means stop buying gpus at this very moment.