I believe about 1 million consumer drones were sold during last year's holiday season. So I would call that moderately popular and 2,500 doesn't seem a lot of units in that regard.
1 million is good but I wonder how many fall into the the Hubsan x4 category - small 'fun' drones - some have FPV cameras, but most either have a fix recording camera or none.
In January of this year the FAA announced that 300k drones have been registered in the first 30 days since the drone registration requirement went public. I can't find any newer numbers on that though.
How many 'prosumer' drones sold, do you know?