I have purchased an extra theme for wordpress. Can I sell it to Someone ?

I have purchased an extra theme for wordpress. Can I sell it on classified or anywhere else as its too late for it to be refunded on wordpress.

First of all you are not allowed to sell it elsewhere. Also just write to support for refund and they will check and make refund if applicable

Themeforest is the most popular theme marketplace on the web and probably the best place to sell WordPress themes online. Codester is another great place to sell your WordPress themes.

I have purchased long ago. But its of no use now… also do they provide refund after such long period of time ?

Unfortunately a change of mind is not grounds for refund especially after a long period https://help.market.envato.com/hc/en-us/articles/202821460-Can-I-Get-A-Refund-