How much is this DVD of the Who worth?

Firstly I hope it’s OK to ask this as a General Question.
(If the topic belongs in Cafe Society, please could a Mod move it.)

So a former Who roadie has given me a DVD of the Who performing in Columbus, Ohio on Dec 11 2006.

I’ve been a fan of the Who since the mid 1960s, so this was great to get. :sunglasses:

I just wondered how much it was worth (sadly it’s not signed or anything special.)

According to Ebay about $16

Wow - that was fast!

Many thanks.