I'm not sure about the supplies, but your handmade items are way low. They are priced as if they were made in a factory and you could push out thousands of them a day. Otherwise, how could you make a profit on them?
If you are hand making anything, you have to consider your time not only in making the items, but finding the materials. You have to consider the time it takes for packing and shipping items that sell. How about the time it takes to do photos and list the items?
In addition to the cost of the materials, you have to consider Etsy and PayPal fees and packaging costs.
Also, your creative inspiration is worth something. If they are unique, original ideas, you have a right to be paid for that too. If people see prices that are very low, they automatically think there is something wrong with it, it is cheaply made and will fall apart.
If they really are cheaply made, then why not go for a product that is well made that you can charge much more for? It takes the same amount of work to list something that is $25 or $50 as it takes to list something that is $2.50. And probably the same amount of work to make it too. :)