A new Mi-172 unit price is about $18-19K million so not exactly cheap. However very capable for the price. If operated and supported i.a.w. proper operating and maintenance procedures in accordance with Mil design bureau they are very safe. I think the majority of Mi8/17 operators operate them in accordance with strict Mil maintenance. Over 17.000 units have been built since introduction. Arguement can be made that major accident statistics are favourable to the Mi8/17 compared to a certain western model that shall be nameless.
However there are always rogue operations everywhere that donīt comply with standards and that includes operators of western machinery as well.