Redken Extreme Length Shampoo & Conditioner Set

Selling a set of Redken Extreme Length shampoo and conditioner. Both bottles are 10.1 fl oz (300 ml). The conditioner contains 4% biotin and the shampoo contains 1% biotin. Both are pH balanced formulas designed for breakage-prone hair. bought this to try it out, i have a very sensitive scalp and my scalp doesn’t take nicely to this product so instead of throwing out if anyone wants to buy it. bought it for : $31 each for bottle what im asking for both : $35