BonyTek via Amazon.com has 66-Piece BonyTek Circular Sanding Disc Assortment on sale for $12.98 - Extra $4.54 off promo code FGZS8AAW (apply in cart) = $8.44. Shipping is free with Prime or if you spend $25 or more. Thanks MichaelG7219
Note, item must be sold by BonyTek and fulfilled by Amazon. Must apply the listed promo code to receive discount.