High Demand for Spongebob!!

I initially listed the costume I made for Stephen on Ebay starting at $10.00. Well as of right now it is up to $43.50, with 7 hours to go. So yesterday I went and got everything to make 2 more. I listed those at $10 or "buy it now" for $45. Wouldn't you know one of those already sold!!! I can't believe people will spend $45 on a grocery bag wrapped in felt to look like Spongebob. I may need to make some in advance for next year to sell again. CRAZY!!!