The "value" of missiles can't really be directly compared between Russia and the west, I had it explained perfectly to me once by a Russian friend who works in the UK defence sector (numbers are for illustration only):
If the UK government commissions a £20bn missile program that will take 5 years and produce missiles worth £8m. The end result will be a missile program worth £20bn that actually cost £25-30bn due to overspending, took 6-7 years due to overruns, and produces missiles worth £8m that now cost £12m due to supply chain inflation/gouging.
If the Russian government commissions a £20bn missile program that will take 5 years and produce missiles worth £8m. The end result will be a missile program worth £10-15bn that still cost 20bn due to corruption, took 7-10 years due to dealing with issues caused by the corruption, and produces missiles worth £4m due to substandard parts/design that still cost £8m due to the ongoing corruption.