From a report at the link below:
'Enormous overkill' as a Patriot missile, usually priced at about $3,000,000, was used to shoot down a small quadcopter drone, according to a US general.
The strike was made by a US ally, Gen David Perkins told a military symposium.
The quadcopter that cost 200 bucks from Amazon.com did not stand a chance against a Patriot.
Patriot missiles travel at five times the speed of sound, while a quadcopter drone typically has a top speed of 50mph.