o.n.o. British English
(or near/nearest offer) used in advertisements to show that you are willing to sell something for slightly less money than you have said in the advertisement:
Bicycle for sale: £60 o.n.o.
o.n.o. British English
(or near/nearest offer) used in advertisements to show that you are willing to sell something for slightly less money than you have said in the advertisement:
Bicycle for sale: £60 o.n.o.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012