Numbers of empty seats could potentially be higher on Sunday with clubs that are entitled to an allocation of tickets, including Swansea, Llandaff North and Machen, trying to shift tickets on social media over the past week.
With tickets costing between £40 and £120, one club chairman said “it’s not worth it”.
A ticket secretary at another club said his club was going to lose £6,000 on unsold tickets, which “a grassroots rugby club can’t afford”.
Sports economist Prof Calvin Jones said: “Obviously the Six Nations is the jewel in the crown of rugby in certain Welsh terms, and for France, the favourites probably for the tournament, it’s a really big match.
“I can’t remember in my 30 years as a sports economist this [so many unsold tickets] happening before.”
