In September 1931, RCA Victor introduced the first 33⅓ rpm records sold to the public, calling them "Program Transcriptions". These used a shallower and more closely spaced implementation of the large "standard groove" found on contemporary 78 rpm records, rather than the "microgroove" used for post-World War II 33⅓ rpm "LP" (long play) records. The format was a commercial failure, partly because the new Victrolas with two-speed turntables designed to play these records were exorbitantly priced, the least expensive model retailing for $395.00 in the depths of the Great Depression. The format was abandoned by 1933, and two-speed turntables were no longer offered, but some Program Transcriptions lingered in the Victor record catalog until the end of the 1930s.