Amazon has 34-Piece DeWalt DW2153 Impact Ready Accessory Set (pictured) for $9.99. Shipping is free with Prime or if you spend $35 or more.
Note, if you're purchasing additional DeWalt tools, this item is eligible for the $25 off $100 holiday promotion (qualifying items must be shipped/sold by Amazon).
Also available, Home Depot has 35-Piece Milwaukee Shockwave Impact Duty Steel Driver Bit Set for $9.88. Store pickup is free, otherwise shipping is free if you spend $45 or more.