If we are looking at
@Oryx data for Russian armed Forces material losses so far, their losses is already worth around two full sized infantry division. And in money worth around four Billion US Dollar to build the equipment and equipped the units with necessary logistic including ammunition, fuels and training.
And they already losses more MBT in three weeks campaign in Ukraine compared to nine years campaign in Afghanistan. And speaking their economy losses impact compared to strength of economy of Russian federation compared to Soviet Union back then, Russia should be more vulnerable and felt the impact much more worse.