Amazon with Artistro USA has the well-reviewed 24-Piece ARTISTRO Dual Tip Acrylic Paint Pens (5.0mm dot tip + 1.0mm fine tip) for $8.99 - $2 off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $6.54 with free shipping on $35+ or with Prime.