Kevin's Tannoy priced as a Single speaker??

Bit confused,, saw a  pop up ad on ebay,,so i clicked (which i rarely/never do) Keven's ad for  his tannoy
Listing on site says
priced each...later says, must be purchased by the pair, 
someone please explain so Kevin can get things   corrected.
Never in my life have I seen by the each , unless it's a  speaker on Madisound.

Come on Kevin, you have wonderful PL amps, dont get all tricky here with your Tannoy.

Also note AER  lists by The single,,,whereas Voxativ by the pair,, who wants to purcahse a  single speaker??
When I see a  listing as a  single,, I just look elsewhere...

https://upscaleaudio.com/products/tannoy-stirling-gold-reference-loudspeaker?utm_source=criteo&u...