Honestly if you cannot afford it then it might be that those guys cannot afford either (or they are not serious). Do you want to date a guy who can't afford few months of fee on a dating site?

Also you might consider changing some things in your life that would allow you to afford more and maybe attract more better quality men. Do you work full time? If you don't make enough are you looking for something better? Second job? If you live with parents you probably don't pay as much rent as if you lived alone so you still don't have extra money?

What does your t say on all this?