A WILLING buyer in a market with plenty of willing sellers, Barzin Bahardoust is finding life surprisingly hard. For years he has been trying to pay Canadians for their blood plasma—the viscous straw-coloured liquid in blood that has remarkable therapeutic powers. When his firm, Canadian Plasma Resources (CPR), tried to open clinics in Ontario in 2014, a campaign by local activists led to a ban by the provincial government on paid plasma collection. Undeterred, he tried another province, Alberta—which also banned the practice last year. Then, on April 26th, when CPR announced a planned centre in British Columbia, its government said it too was considering similar legislation. CPR has managed to open two centres, in far-flung Saskatchewan and New Brunswick. Even these have faced opposition.