Although I realise that not all Sikhs accept the Sikh Rehat Maryada, I thought it might be useful to write what it says. On the page about marriage, it says (Chap. XI, Article XVIII. Statement l):
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-sikhi-sikhism/27170-divorce-in-presence-guru-granth-sahib.html l. No Sikh should accept a match for his/her son or daughter for monetary consideration.http://www.sgpc.net/rehat_maryada/section_four_chap_eleven.html
I believe it also says somewhere that marriage is not a business arrangement, but I'm not sure where and lack the time for looking for it right now. So much would be solved if we would follow the SRM.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=27170
(Although I believe the SRM needs revision - I see gender inequality in this page on marriage, for example - I feel, as a Sikh, I am obliged to follow it until such revision. But please, let us not be sidetracked into a discussion of SRM. This discussion on divorce is too important and SRM debate belongs in a different thread.)