Got an email from Jim King, looks like the SAL B7 in O-scale is getting some attention. He sent out a list to folks who have indicated they want one, for them to review their order and make corrections.
He indicated nothing firm, but the price may be "$140-ish" per car. I increased my order after seeing this. Could be higher but this is THE CAR I've been wanting.
He also had 3 other cars on the wishlist:
SOU low side gondola
CB&Q 53' flatcar
AAR 70ton flatcar
I saw nothing on his website about these cars so if anyone has any info please share (prototype photos would be nice).