BAC 00749 Circus Train Set

[0276400bb]

What year was the BAC 00749 set manufactured/first sold? Why are current sale prices and availability so different? Metal or plastic trucks? Other plus or minus?  I am an old Lionel O gauge guy trying to downsize to HO.

[Yard Master]

Set 00749 (The Greatest Show On Earth Special) was first sold in 2018 and discontinued in 2022. The locomotive and cars have plastic trucks.