I think one of the reasons they are so expensive is that they are better quality plastic, and they are sterile. wellm, the ones I use are, they are abot $10 for a 10 pack I think from the chemist...I used the Kanesori ones and they are ace. they have a seal on them, they are easy to use, adn as I said they are sterile.

I actually have a full packet here if you want them....PM and I will post them over , cos I dont use them anymore and noone I know BFs...