Amazon offers Prime members the Prismacolor Premier Soft Core Colored Pencils 72-Pack for $38 with free shipping. (Non-members can spend $49 to qualify for free shipping; otherwise, shipping costs $7.17.) That's the lowest total price we could find by $8. They feature soft cores for blending and shading, and color-coded casing for identification.
Audio Plaza via Amazon offers two Prismacolor Premiere Double-Ended Marker 72-Packs for $389.98. (Add two to your cart.) During checkout, the price drops to $269.98. With free shipping, that's $96 under the lowest total price we could find for two such sets sold elsewhere. Each marker has a fine and chisel tip and the set comes with a carry case.