The fee for
DI (Donor Insemination) varies depending on how/where you do it.
If you do at home inseminations it will obviously be cheaper than
if done through a doctor or clinic.
If you do use a doctor/clinic it depends on how much monitoring is provided and how much your insurance will cover. Costs would therefore range from approx. $500 to $3500 depending on method/doctor/clinic/insurance.
As far as I know there is no age limit
if you are doing at home inseminations, however some clinics may have an upper or lower age limit.