The U.K. will allocate 325 million pounds ($416 million) to purchase over 10,000 "cutting-edge" drones for Ukraine, the U.K. Defense Ministry announced on March 7.
The majority of the drones will be highly effective first-person view (FPV) drones. The package will also include 1,000 one-way attack drones, researched and developed in the U.K., as well as surveillance and maritime drones.
The prices for the drones are not equal. I am guessing their maritime drones are the expensive bit because of their range and capabilities. This article from last September says they are about $250k a pop: https://www.bbc.com/news/world-europe-66373052
Even just one Russian ship loss would offset the costs for all of the drones. (How many submarine conversions does Russia have now?)
This is a fair take. Those marine drones are doing amazing work.
Somewhere in a timeline with an alternative timeline in Imperial Japan, there's a guy going "what if we didn't have to put pilots in our flying bombs...". And a bean counter is figuring out if that'll save money.