With Buick, The "Limited" is always the more expensive upgrade version.
Custom is lower end. Limited has more features.
Buick City was created in 1904.
Buick Reatta was created in 1988.
Buick Open was created in 1958.
Buick Verano was created in 2011.
Buick Men was created in 1993.
Buick Terraza was created in 2005.
Buick Century was created in 1936.
Buick Riviera was created in 1963.
Buick Skylark was created in 1953.
Buick Skyhawk was created in 1975.