I buy and sell on Ebay to help support my hobby. When I sell an item, I charge only what it costs me to send it. Packaging materials are recycled from purchases and from just holding onto packing materials that I come across every day.
However, I must bypass alot of would be purchases, on Ebay, due to, what I consider, higher than necessary shipping fees.
Some sellers jack up the shipping charge in order to increase the profit on an item. Why not just sell the item for what you think its worth and be fair with shipping. Most of us have not just crawled from under a rock! We can spot the plot.
I will grant you that in some cases, the seller is a business with employees to pay, who package these items. However, more often than not, I see small time operations charging higher than fair prices for shipping.
I will end it here, purposefully, as I know I can rant on for a few more paragraphs.