Herbie
Rendezvous Conspirator
Mate that Plug/Lead is on the shelf in over 5000 Stores World Wide, I just bought 3 of them so how can you say that they are discontinued,
"Discontinued" in the sense that the IEC no longer lists that plug configuration in the standards. Someone designing new product to IEC standards would not be choosing that particular connector type, so the cabling will not be as ubiquitous as the IEC C13 (every PC power supply) or IEC C8 (most stereos and A/V equipment) connectors.
For example, a search on Amazon US for "IEC C11 cable" turns up zero correct options, while "IEC C13 cable" turns up literally hundreds of options.