[Solved] How to get LEGO PART 75c36: Hose, Rigid 3mm D. 36L / 28.8cm - Blue

[N. W. Perry]

I have searched this part for a while now, but I am not able to find the blue version of 75c36 in any store. I am worried because this part is only in one set. Are there ways to buy rare lego parts like this one? I want to complete my old lego set 4611-1 - Police HQ.

 Bricklink thinks the part in that set is actually 75c34, and there is one seller listing the part in blue:
https://www.bricklink.com/v2/catalog/cat...only%22:0}