Selling all in one go:
3--0.com (Name, expires Dec 2014, regged since 2009)
3--5.com (Namecheap, expires Nov 2014, regged since 2009)
3--9.com (Namecheap, expires Mar 2015, regged since 2013)
7-5-7.com (Namecheap, expires Nov 2014, regged since 2009)
8-5-8.com (Namecheap, expires Nov 2014, regged since 2009)
Awaiting your offers for the lot.
Bitcoins / Paypal / Domain Trades accepted.
Four letter domain names are not "rare":
http://www.domainnamesoup.com/4letterdomainnames.php