Interesting proposal.
But like bhp/litre or bhp/ton some will consider it pointless.
I liek th ecompairsons it turned up though
Also when you look at price you need to ensure there aren't market, currency or tax (import/export) skewing the numbers.
So their would need to be an accepted way to balance all of these out.
Otherwise you get "Car X is cheaper than Y in country Z so is better value" and yet the prices for the same cars in country W are the other way round hence making the original comment wrong !!
So for that we would need another proposal ...
the LOWEST price against reference currency in any country used as the benchmark.
Then all we have to agree is the 'reference currency'
The days of the dollar's stability are long gone, so which one ??
But we're adding more analyatical information to make balanced choices when in reality some will stay blind to the consideration of differences outside of their own backyard. So I suspect all the proposals will be ignored. Cant' have the "real world" altering perceptions