Вот что у них сейчас на сайте (ниже). Учитывая то, что написано ниже думаю - имеет ли смысл у них заказать хоть какой-то сертификат - пусть даже не полностью доверенный - потому что без сертификата совсем плохо, а как еще можно быстро получить сертификат на физлицо кроме как через них не знаю ...
Dear customer,
As you are surely aware, the browser makers distrusted StartCom around a year ago and therefore all the end entity certificates newly issued by StartCom are not trusted by default in browsers.
The browsers imposed some conditions in order for the certificates to be re-accepted. While StartCom believes that these conditions have been met, it appears there are still certain difficulties
forthcoming. Considering this situation, the owners of StartCom have decided to terminate the company as a Certification Authority as mentioned in Startcom´s website.
StartCom will stop issuing new certificates starting from January 1st, 2018 and will provide only CRL and OCSP services for two more years.
StartCom would like to thank you for your support during this difficult time.
StartCom is contacting some other CAs to provide you with the certificates needed
Please let us know if you need any further assistance with the transition process. We deeply apologize for any inconveniences that this may cause.