Relative to what? A modern fighter jet? An aircraft carrier? SSBN?
As it stands 24 drones cost Poland whereabouts $260 million. Granted, it includes not only the craft, but control stations and ammunition, but we can use it as a reference to extimate a single drone in operation being worth ~ $10,8 million.
Turkey`s first operational UCAV, Bayraktar TB2, designed and developed indigenously by Baykar Defense, will be exported to Poland. The export contract was signed at the Presidential Complex by Baykar General Manager Haluk Bayraktar and Polish Defense Minister Mariusz Blaszczak in the presence of...
www.defenceturkey.com
That means that whole Lybian intervention, with 20 TB2 lost, costed more than 200 million$ in confirmed losses alone and who knows how many were lost, but never substituted with photo or video evidence.
lostarmour.info
Meanwhile, 38 Pantsir-S1 went to Algeria for $500 million, which gives a price of ~$13,1 million per unit.
Россия поставит Алжиру около 40 зенитных комплексов "Панцирь-С1" на полмиллиарда долларов. Интерес к российскому комплексу проявляют и другие страны
www.interfax.ru
Context. None of the systems listed were actually operated by Russia, so it seems "bane of Russia" might be a bit premature petty nationalism and wishful thinking.
There's a long list of Russian Air Defence systems being knocked out by a cheap drone like TB2, I do believe it definitely caused a jolted nerve.
Most of the list is made from 50 years old systems and are actually Soviet produced. And it is not only the matter of using obsolete equipment, but a matter of being combat ready and actually functional as well. OSA, for instance, entered production in 1970, which means at least part of on board eqipment is running on vacuum-tube computers.
Most of modern systems were destroyed while they were, quite obviously, not in use. which is suppported by the links you've provided. I don't doubt TB2 ability of attacking targets, which are incapable of shooting back at the moment, or similar ability of every other armed drone, aircraft, helicopter, tank, IFV or a militiaman with an RPG.
Last, but not least, I like the way your source puts it. "Destroyed by TB2...and loitering ammunition/ground launched guided ammunition". That is adressing my initial point of sticking "destroyed by TB2" logo on everything for propaganda purposes rather nicely.