Help, FTM! So I got the Medela style advance breast pump (only one my insurance covered) and I am curious if there are other cheaper bottle brands out there that fit the pump besides the medela brand....any advice or tips would be awesome!

yay i got my free electric medela breast pump in the mail today :)
I got my free medela breast pump today ! Does anybody know if using it for nipple stimulation will help !?!
I’m not breastfeeding .
Medela pump in style advanced or Medela freestyle pump?? Help!
Who else using MEDELA breast pump? Does it seem like the pumpers? Are to big? Like does it really hurt I mostly pump so I use it a LOT should I get a new pump?
what's a good brand breast pump?
the regular width bottles, nothing wide neck.