I just ordered some of the square 8oz clear lid tins thru
http://www.sks-bottle.com/340c/fin7j.html
this link.
I don't know what they are like yet - but they seem to be exactly the ones on papertray's website. I receive them tomorrow and can post an update. You can't buy individually however. I purchased 36 for $24.48 - and along with two other items - my shipping was under $12.
I've purchased cd tins from them previously and the quality is great and so is service.