"Rickenbacker has made just one 5 string bass in the last 17 years" - that refers to a one-off bass that was made like his 4-2-5 basses, a four-string C64 carcass converted to a fiver with a 5th tuner crammed in between the original D and G tuners Rath-style.
Starting bid for that Mint/BT C64/5 was $3,699, and Jeff posted on TB on April 9, 2016, "that price is too steep for me ..." Now he's asking for $3,200 for a used standard S5.