One thing I’ve found is double is better when you sell things. Specially non-name brand items!
Such as these Target skorts that sold for $10.50. I don’t think I could have gotten $5 each out of these.
I recently purchased these 2 books for 45 cents each. I posted them together for $4 with free shipping. They got a bid within the hour & sold for $7.50! Now that is a great deal for the buyer and I still make some money! Yay!