Epic!
I'm guessing you mean:
http://www.chainreactioncycles.com/Models.aspx?ModelID=871
Where they say:
NOTE Pair means a pair like a pair of shoes, a pair of links means one complete link (2 sides).
And they give you the choice to buy several at once for cheapness!
£1.99 for 1 pair, £3.99 for three pairs.
You really cant fault CRC here!
Also from Wiki your Latin nota bene means In present-day English, it is used to draw the attention of the reader to a certain (side) aspect or detail of the subject on hand, translating it as "pay attention" or "take notice". Which I think its safe to say CRC did.
Short of making it red and flashing what more could they do?