Root canal are expensive because you did not get a filling done before, filling were not done because u neglected to go to a dentist every 6 months.
Root canals are expensive treatment.
If u want a cheaper alternative, u must find a dental college near you.
Next Steps
find a dental college near u.
Health Tips
bygones are bygones, from now on try to maintain your teeth, u can save lot of money.
send an image of your teeth to tell u better options.