Many months ago I bought Ping a few of these and he loves them. Bad thing is he has lost the four I bought him. Now I have no where local I can buy these. So I have been looking online for a place to buy these. They have been hard for me to find but I just found some on Amazon:
http://www.amazon.com/Mews-Ments-Mylar-Balls-10-Pack/dp/B0006342CI/ref=pd_sbs_k_title_3

Question is does anyone know where I can buy a bunch of these for cheap?

Have you checked eBay?

Here a cheap place:

http://www.petco.com/product/104434/Mews-Ments-Mylar-Balls--3.aspx

I don't have a paypal account for them.

I just was over at plain brown tabby (doesn't someone here own or run that) for a pretty good price .75 a piece but I have no idea yet what the shipping will cost me.

Here a cheap place:

http://www.petco.com/product/104434/Mews-Ments-Mylar-Balls--3.aspx

Price is good shipping is a killer tho. 9.74 for a pack of 18 but 8.15 for shipping.