Is that for the classic aviar or the brick aviar?? The brick avair is the newer version of plastic with the same stamp. The classic aviar is from the early 90's. I have had both ( currently I put with an old classic aviar ) and the plastic is way different between the two. If they are the classic aviars for 7.49, I would say buy them all since you can sell them on eBay for $20-$50 each!!
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.