What's worse, the fully-flexible Y-class fare was only ~14 EUR more:
[KVS Availability Tool 5.3.9995/Diamond - Sabre: Fares/DotRes/US]
Code:
NUE Nuremberg Metro / Nuremberg Apt DE = NUE [EDDN]
BRU Brussels Metro / Brussels Ntl BE = BRU CRL [EBBR]
SAT 01 May 2010 | MON 31 May 2010 | R/T | Economy
Carrier From To Fare Cur Fare Basis
--------- ------ ---- -------- ---- -------- --- -- ----------
LH NUE BRU 79 USD E99B
LH NUE BRU 95 USD EKOMBI21
LH NUE BRU 163 USD TKOMBI21
LH NUE BRU 206 USD WABASIC1
LH NUE BRU 296 USD LKOMBI21
LH NUE BRU 332 USD VABASIC1
LH NUE BRU 494 USD QABASIC1
LH NUE BRU 586 USD KKOMBI21
LH NUE BRU 651 USD HABASIC1
LH NUE BRU 732 USD GKOMBI21
LH NUE BRU 826 USD PKOMBI21
LH NUE BRU 908 USD MFLEX1
LH NUE BRU 963 USD BFLEX1
LH NUE BRU 1155 USD YABASIC1
LH NUE BRU 1170 USD YFLEX1