Most 'serious cyclists' don't actually spend that kind of money on that kind of weight. Some crazy people do, but some people also spend $8k on a desktop PC.
In the range of most cyclists: having carried my $400 iron-frame bike up stairs and a friend's $1500 bike up same, the difference is certainly not "1/10 of 2lb".
In the range of most cyclists: having carried my $400 iron-frame bike up stairs and a friend's $1500 bike up same, the difference is certainly not "1/10 of 2lb".