Okay I understand you're referring to Christian singles sites, and not our site here, as this site is free, but as a Christian webmaster who is overworked and grossly underpaid, I must say it's a little odd that people want such service -- even for the most important thing in their life, finding a lifetime partner -- and don't want to chip in one dime for all the hard work and real expense that any very active Christian site would have.
And I would think that finding your lifetime partner would be well worth a few dollars, and that SHE would be well worth thousands of times that to you, and I would think that being willing to shell out a few dollars would be a better sign of financial preparedness for marriage and willingness to shower that special one with your money and your life, not to mention showing appreciation for the hard work of people devoting their lives to helping you find that person, and help with their real expenses.
Just speaking as a Christian webmaster and site owner, even though I know your comments were not about our site.