Great advice Gordon and Sandalwood. By the way,
I still have your chattling report Gordon and
it has a ton of useful info.
Yeah, I know about getting stuff cheap and reselling.
Here is a video I like of this guy buying stuff and selling
on ebay. One score is a $5 hammer that he resells
on ebay for $50! One commenter was skeptical
but I checked the completed listings and this
hammer often goes for up to $100!

https://www.youtube.com/watch?v=2M_FhVvvEM0

But what I like about Diems method is that he reversed
the process. Instead of buying locally and selling on
Ebay. He buys from ebay and sells locally.
This is a huge advantage if you are short of cash.
Ebay or rather its nasty partner paypal takes forever
to pay you. I ordered an item from ebay about two
weeks ago and got the item a week ago and paypal
still has not paid the poor seller yet! They have a
"scheduled payment " for tomorrow March 30.
Its a pain in the neck for me because I would have
been happy to pay right away but now I have to
make sure the money is in the bank to pay for it.
(paypal will only take scheduled payment from bank)
But this works to your advantage if you sell locally.
You find a used laptop on ebay cheap or expensive.
You put an ad like Diem did, and if you get a buyer
schedule a session to meet in 3 days and order
rush delivery of the laptop.
Once the buyer pays you you have plenty of time to
pay ebay because of the paypal delay. If the
buyer does not like the item, return it without
spending a dime except perhaps shipping cost.
Makes sure the seller has a return policy
of course. But before you order you should judge
if the buyer is really hot for the item and likely to buy.
Save you both a lot of time.

Trevor