Oil filter £3.95, oil 10/40 ( comma oils) £14.95 from my local car spares shop
Time to change 20mins
I do it yearly every spring

the easiest job ever thanks to an external oil sucker/ pump
many of today's cars do not even have a sump plug !
Be thankful
My cam belt will be 5yrs old next year with approx 8,000 miles on it.
my car has 67,000 miles from new on a 1.6 cvh engine