When I started SandlotCards I thought the concept was pretty simple; put cards online, take orders, and send out the cards. Little did I know something that seems simple, like packing cards, would take a lot of thought. For many orders I would put the cards in a penny sleeve, pop them into a top loader, and put a piece of tape over top loader to keep the card from slipping out.
Then one day I was on the Sports Card Forum and I read a post regarding putting tape over the opening on a top loader. Seems like many people did not like it when it was done. I never got a clear reason why but more than one person posted in the forum that they did not like this practice. I had never received a complaint about it but I decided to stop the practice and pay the extra few cents to seal the top loader in team bags.
This isn't any big insight as to what it's like running an online store but it should give you some idea as to the many decisions that have to be made when running a store, even on something as simple as putting a card in a top loader. How to package the different varieties of orders is a whole other ball game!