Looking for N Scale Acela Business Class Cars

[bill821]

Can someone tell me where I can purchase these additional cars for my N scale Acela. I need two of these -- Acela Business Class Car - # BA-89973, and one of these -- Acela End Business Car - # BA-89974. They seem to be sold out everywhere online but was wondering if anyone had any suggestions for me. Trying to get them as a Christmas present for my son. Thanks.

[kmcsjr]

They are often listed on ebay, for reasonable prices. Right now.. if you search, you can judge , but I paid a tad less.
I'd follow Acela, 89974 and 89973 searches, as well as just Amtrak (people often misspell listings)