I am the seller of those Argen 7.
yes, I also never saw all of them been selled at once.
In case of any doubt you can ask me directly here, but I think the description for the items is very well detailed.
In Brazil I am very known by the hard collectors, some of them are used to post here.
Most knows me as ESCORTERA2010 (the user at Mercado Livre).
DRURYSMAN (Ebay user).