This is why you can get it much cheaper in Mexico and Canada:
From wiki:
An unintended consequence of the 2006 U.S. Food and Drug Administration (FDA) safety program called the Unapproved Drugs Initiative — through which the FDA sought more rigorous testing of efficacy and safety of colchicine and other unapproved drugs — was a price increase of 2000 percent for “a gout remedy so old that the ancient Greeks knew about its effects.“Under Unapproved Drugs Initiative” small companies like URL Pharma — Philadelphia drugmaker — were rewarded with licenses for testing of medicines like colchicine. In 2009, the FDA reviewed a New Drug Application for colchicine submitted by URL Pharma. URL Pharma did the testing, gained FDA formal approval and was granted rights over colchicine. With this monopoly pricing power, the price of colchicine increased.
In 2012 Asia’s biggest drugmaker — Takeda Pharmaceutical Co. — acquired URL Pharma for $800 million including the rights to colchicine (brand name Colcrys) earning $1.2 billion in revenue by raising the price even more.[23]
Oral colchicine had been used for many years as an unapproved drug with no prescribing information, dosage recommendations, or drug interaction warnings approved by the FDA. On July 30, 2009 the FDA approved colchicine as a monotherapy for the treatment of three different indications (familial Mediterranean fever, acute gout flares, and for the prophylaxis of gout flares), and gave URL Pharma a three-year marketing exclusivity agreementin exchange for URL Pharma doing 17 new studies and investing $100 million into the product, of which $45 million went to the FDA for the application fee. URL Pharma raised the price from $0.09 per tablet to $4.85, and the FDA removed the older unapproved colchicine from the market in October 2010, both in oral and intravenous forms, but gave pharmacies the opportunity to buy up the older unapproved colchicine. Colchicine in combination with probenecid has been FDA approved prior to 1982.
In August 2009, colchicine won FDA approval in the United States as a stand-alone drug for the treatment of acute flares of gout and familial Mediterranean fever. It had previously been approved as an ingredient in an FDA-approved combination product for gout. The approval was based on a study in which two doses (1.2mg and 0.6mg) an hour apart were as effective as higher doses in combating the acute flare of gout.
Marketing exclusivity in the United States
As a drug antedating the FDA, colchicine was sold in the United States for many years without having been reviewed by the FDA for safety and efficacy. The FDA reviewed approved colchicine for gout flares, awarding Colcrys a three-year term of market exclusivity, prohibiting generic sales, and increasing the price of the drug from $0.09 to $4.85 per tablet.[