My preferred wig suppliers!

Jpop (US) for Monique Gold Label brand wigs. Pricey but *perfect*. Keep checking back - sometimes prices drop when a new series of wigs comes in! Sizes 3.5 to 11.

You can also buy Monique brand wigs directly from the (US) manufacturer (although not all of these wigs are the Gold Label variety). Sizes 3.25 to 17.

Cool Cat (Taiwan) also sells nice quality wigs for reasonable prices! And they will mark shipment values low & ship as "gift" for customs. BJD sizes 6 to 9, plus Pullip & Blythe wig sizes.

Custom fur wigs with attitude! I'm not usually a big fan of fur wigs but Cassiel does a great job with them. Any size, any doll.