I just looked on ebay - neither the little bug nor the expression look cheaper to me than you can get at J's Mikes, or ACMoore on sale - the ones on ebay have no carts with them. ACMoore, at least, has them on sale about once a month in a bundle with several carts for less than the ones I saw listed today on ebay. And that's without shipping.
If the price is anywhere near comparable, This old lady would rather buy locally where I have somebody to -er "deal with" if there's an issue with the machine.