麻烦大家帮看下这张特价票的信息，好怕买错了

票面信息如下，想问下有没有什么特殊条件？我知道不能退、改，只能坐选定这趟。还有其他的吗？没写必须和其他票一起用才生效吧？因为便宜得可怕（柏林到克拉特夫，才260RMB），所以好怕买错。。另外，克拉特夫是波兰的克拉克夫吧？就是离奥斯维辛不远的那个。
1 x Sparpreis Europa

Depends on availability. Valid only on the train selected. Also available if the border is crossed using ICE or IC/Ectrains
17.5 EUR ADMIN FEE APPLIES. NO REFUND FROM 1ST DAY OF VALIDITY. NO EXCHANGES OR PARTIAL REFUNDS. DB ONLY: REGISTERED TRAINS/ IC BUSSES AND DAYS/HOURS

1 x EuropaSpezial/SparPreis Supplement

Valid only with Europa-Spezial Ticket. Limited availability, advance purchase recommended