Hi Jmyers2020 and firstly welcome to SaleHoo.
We do cover the subject of ebay prices and why they are set at wholesale and below in some cases in a lot of detail on the forum, so that information is there if you are interested in learning more about that.
In regards to Nike, most branded shoes like this are sold through licensed distribution channels, not open to the general public wholesalers. This way the company is better able to control the market.
You're absolutely correct about electronics, super competitive market, especially on eBay. That's a BIG dollar game if you want to play with the big boys in that sand pit!
The advice we always give to those just starting out is take a look around the home, see what you can find that you no longer use and start listing that on eBay.
There are a couple of advantages to this.
1. No outlay
2. Great research tool to see how well certain products sell.
I always advise to look at the Second Hand market as well, especially places like yard sales, weekend markets, auction houses and so on. Second Hand products have always been, and continue to be great eBay sellers, and here is where you can find branded electronics and Nike products in good condition, at bargain prices.
It's a market resource where 200 is plenty to get you rolling if you know how to spot a good deal, and know how to talk an even better one!