Saffron prices at wholesale and retail rates range from US$ 500\/pound to US$ 5,000 \/ pound ( US$ 1100 â `` US$ 11,000 per kilogram ) â '' equivalent to Â # 250 \/ â 350 per pound or Â # 5,500 \/ â 7,500 per kilo . Saffron prices at wholesale and retail rates range from US$ 500 to US$ 5,000 per pound ( US$ 1,100 â `` 11,000 \/ kg ) â '' equivalent to Â # 2,500 \/ â 3,500 per pound or Â # 5,500 \/ â 7,500 per kilogram .