Which Laptop for GarageBand???

Im looking to buy an old laptop, looking to spend maybe 150-250.

i need a laptop that does have garageband installed, a lot i see dont.

looking to use the garageband to record/edit my music.

what type of laptop should i be looking at to buy? im far from tech-savvy, macbook ibook macair i dont know the difference between anything at all.

ive loooked on ebay and some laptops that dont have it installed the owners say they can reinstall, but since its old it may run slow. this is NOT what i am looking for.

what product?

what operating system?

bottom line, between 150-250 bucks, laptop, garageband. thats it.

THANKS!