The money isn't the biggest lose for Russia.
The Su-25 factory is in Georgia so Russia can't replace losses, hell they can't even get parts to repair damage aside from what they have in stock.
They are replacing them with a modified version of the SU-34M, there is a total of 40 on order (not sure what the breakdown of variants is) with between 5 and 10 delivered this year depending on source. Manufacturing isn't currently keeping up with losses.