The best place is probably to go to a performer because they know what a fan needs to be good (if that makes sense!). Try messaging Miss Diamond Blush - her fans are known for being good and I've seen Millie Dollar's red set in the flesh, as it were, and they're certainly well made!
If you're on a budget the cheapest place to go is
Ostriches On Line - Ostrich Meat, Feather Dusters & Boas Fans Pictures, Ostrich Leather & Oil Products - Ostriches Online but beware of their customer service - they're helpful and nice, but seem to make mistakes ...