WOW @Infosec!! What an incredibly helpful post! Thanks for all of this information. There are so many people that sell laptops, computers, phones, electronics, etc...
I try to basically give away my stuff and it's still hard. I had a new in the box CPU I bought (wrong socket). It was a few years old. Saw it still selling for ~$250. I offered it for $100. No takers. Lowered it to $50. Finally gave it to a friend that had an old machine that could use it.
Had a laptop taht was a few years old. Paid like $800 or so (?). Offered it for $100. Nothing. Decided to donate it.
The last electroinc that I was able to sll is my WRT 1900AC router. Sold it for $20 or so. About 1/5th of what it goes for.
Ah, also, I currently have a set of speakers. 2.1, THX, paid $300, I see them sell for $225 used. I offered it for $100, even $75. Paid for upgaded placement. Nothing. And I'm downtown SD so pretty dense area.
I agree that the only thing decent to sell is Apple products. I see people selling 2018 the base Macbook airs for over $1000 (Apple sells for $1199 but vendors will sell for $999 at times). So with apple stuff sometimes it's MORE than you can buy new.
The only issue with selling apple stuff (for me) is the onslaught of lowballs. I had an apple watch that I saw sellign for ~$275 on ebay. I listed it for $250. I got 10000 messages offering $175 or less. I finally removed it and listed it on ebay. Sold it for $265
You know what's worse than listing it for todays price on Amazon or other large retailers? When they use PC Part Picker as an appraisal tool.
PC PART PICKER IS NOT AN APPRAISAL TOOL, LOL! Whenever I see screenshots of PC Part Picker next to pics of a used gaming computer I cringe. SMH. And they JUST DON'T GET IT.
Old parts and motherboards can actually go up in price because of scarcity and they use those prices too. LOL.
The easy way to get a rough idea of value, go look at closed/sold items on ebay that are identical to yours. I look for an average on the latest 10. If they're really old sales, they're probably not relevant anymore. Don't compare your i5 OptiPlex 3010 to the i7 version.
Want more views on your computer? Don't just list the model number. That means nothing to most people. List the basics. Give them something to use a basis for comparison. Then give them an idea of what it can be used for.
"This PC is great for productivity!" - because it doesn't have a GPU in it.... things like that.
"This is a great fortnite starter PC" - because it has a low tier Nvidia GPU that can run 60FPS at some detail level. If they have to go look up the stats or benchmarks, you lost them already.
Meat and potatos tech specs in the description. "i5 Computer" is not good enough.
Intel Core i5-3470 3.2 GHZ Quad Core
256GB Solid State Drive (SSD)