$16.89 Aceaddity Silk Dual-Colour Blue/Rose Red PLA
20% off coupon on product page

$17.49 Aceaddity Silk Dual-Colour Blue/Green PLA
If bought with the Blue/Rose Red then you can get both for $31.83 or $15.92/kg.
10% off coupon on product page.

Lots of good deals in this listing. All the filament options have coupons and lightning deals that stack, coupons work extra well on lightning deals. There is also a buy two save 5% promo.