Neosure Ready to Feed premade bottles?

I stumbled across some pre-made bottles of Neosure on babiesrus.com. They are the same bottles that they were feeding Timmy in the NICU and I'm thinking about buying a few boxes for when we're on the go and don't have time or a place to stop and make a bottle. They seem awfully convenient.

I'm wondering about nipples for them. I know the nipples on Timmy's bottles won't work for them because we use Playtex Ventaire and the bottle is vented, not the nipple. But I don't see the nipples they used at the NICU for sale anywhere so I'm hoping one of you know? Can I just buy any normal baby nipple or is there somewhere that I can find the ones from the hospital? Thanks in advance to anyone who responds!!!

walmart sells them in the formula isle that attach to the bottles
they are kind of expensive though so what I did was called NICU and they gave me some for free you can sterilize them and we use them our Son would only use those bottles for like 3 months before we could finally get him to take doctor browns