Gadsden County deputies arrested Gregory and Willie Charles Jones with felony charges for trafficking cocaine.
Authorities say the duo from Quincy were negotiating with an undercover agent for a month to purchase a kilo and a half of powder cocaine.
Deputies say the brothers showed up with $9,000 in cash for an initial payment, and attempted to make the transaction in the parking lot of Wal-Mart in Quincy.
Investigators also seized a 2006 Suzuki motorcycle and a Dodge Neon car.
The brothers are currently held in the Gadsden County Jail with no bond.