Try and look at eBay, Vinted or Depop for second hand strollers
My mom bought our stroller/car set combo for us and it was about $600 total
I'm not sure where you're from, but maybe you have a used kids store where you live, like Once Upon A Child, where you can get gently used baby equipment. You can also check Facebook marketplace or local parenting groups on Facebook.
🫣 in total I’ve paid probably close to $2000 for my stroller 😂 the original set up was $1699 for the base, bassinet and toddler seat. I ended up pregnant at 4m pp and brought an extra seat/attachements when my babe outgrew the bassinet. It’s still in perfect condition despite being nearly 3yrs old and will have been used for 3 kids 🤷🏻♀️