Tips on selling digital codes?

[TheBluRayBandito]

I'm about to get rid of all the codes I have, but I have some questions:

-If I have multiple codes that are part of a trilogy or saga, would it be better to sell together or separate? I have some codes that came in collections, but are individuals. I also have single codes that can complete a set. I was thinking of selling together with a discount than the regular price I have in mind.

-Should I just list a few codes here and there or throw them all out there? I kinda don't want to get overwhelmed, but I'm trying to get rid of them all ASAP.

-I noticed buyers don't respond in a poster's thread. Is it strictly done via PM? I kinda don't want my inbox to be filled and would rather have a poster ask what they want in a reply and I can contact them via PM. Plus I don't want to have multiple people asking for the same movie in PMs. I think it'll be better if posters "claim" their movie in a post so others will, hopefully, know they're gonna be unavailable or for other reasons.

-I plan on using Paypal and I've never used it to receive money. Is there a fee charged to me or the buyer?

If anyone has something else to add, let me know.