Wool consist the fur from different mammals, therefore the price can be variant. Wool is an incredibly versatile material with its natural odour resistant and handles moisture impressively well - and has good temperature regulating properties. Wash wool on a specialist wool detergent at 30°C with a low spin setting or even just a cold water cycle to provide it from shrinking.
Always turn the product inside out. Never tumble dry. Squeeze excess water from the product after wash.