I'm sure most, if not all of the reputable companies mentioned within the Avodart forum despatch orders promptly, but if you mean will you receive it in a couple of days then no. I don't know which Country you're from but, given the vagaries of International air-mail, delivery typically takes between 1 and 2 weeks.
Would also be useful if you specified generic or genuine dutasteride, as suppliers for each differ.
Slarti