This four-pack of dual-color silk PLA is down from $63 to just $21 after the promo code “DEALUS2”. Each spool is coextruded from two shades in a single strand, so the color shifts depending on the angle it’s viewed from, without needing a multicolor printer setup. Silk PLA prioritizes that glossy look over raw strength, so it suits display pieces and decorative prints more than load-bearing parts. The pack will ship for free from a local US warehouse and the coupon ends July 31. Buy Now at AliExpress