Here are some other options for sound. Personally I would go with Virgil he has some amazing stuff and he's a part of our halloween community. I always try and support those who support us.
CD Baby: VIRGIL: Klown here he offers samples so you can listen to them. And then you buy them from various retailers. Definately listing to the one called circus hell.
Or i found these which i have no clue on but they could be good. Id ask the seller for a sample of it. ..
Halloween Props Digital Audio Sound EFX CD - eBay (item 320257940586 end time Jun-05-08 18:09:31 PDT)
Halloween Props Digital Audio Sound EFX CD - eBay (item 320257940613 end time Jun-05-08 18:09:38 PDT)