Am I missing anything?

You got all the speakers for a 5.1 A/V system.

Might want to add the amp/procrssor that feeds the speakers.

"Avid Audiophile"  If the cables to the speakers are easily removed, them too. I would think they would be of better quality than Walmart zipcord.

I've never sold here but do occasionally read the "I got scammed selling" posts.  You might take a few minutes to find & read some of those.  They often seem to have good advice about how to protect yourself as a seller.

@kingsleuy, great suggestion.  She has the Rotel RSX-1067 and the high-end cables for the forward speakers as well, along with a Monster Power Powercenter and Radix power cord.

@sdavies2720, another great suggestion.  I've sold a few things on Craigslist and ebay, but I'll check into that as well.

Well that will teach him. Trying to do something nice for a friend. The nerve.