No. You can purchase a Special-Offer Ticket at ticket counters only at specified stations. An exception is the Special-Offer Ticket Prague – Ostrava region / Zlín, which can be purchased at any ČD ticket counter. You can also purchase a Special-Offer Ticket in the ČD e-shop, using the TeleTiket service on tel. 221 111 122, or from a conductor on the train (when boarding at a station with an open ČD ticket counter, however, you must also pay a handling surcharge for ticketing on the train).