Some Sopranos under $1400
$1100. 1929 Conn New Wonder straight soprano. Non-original finish, but pretty.
$1395. 1978 Vito (Yanagisawa S6 Stencil) straight soprano. Nice shape.
$1195. 1925 Buescher True Tone straight soprano. Formerly gold plate.
$1195. 1925 Buescher True Tone straight soprano. Silver plate.
I saw some other horns, but I think that they'd be well over $1400 after repairs. I can also justify the above prices by looking at closed eBay ads and saying that they're pretty close.