If you bave been looking for a new (Tsunami equipped) release HO UP 4-8-4 #844 they are back in stock at modeltrainstuff.com (MBKlein). I missed the first batch there (I like their prices and service) and purchased one from an EBay retailer with good feedback, also at a good price. Just an info item for those who, like me, are a fan of this loco. In my case, my grandson and I have chased it twice in Texas (and look forward to the Challenger returning and, eventually, the Big Boy (if it can run to Texas).
Paul
Modeling HO with a transition era UP bent