Wraith costumes and props for sale on eBay
There's an SG1/SGA auction on eBay at the moment
It includes several wraith items (last week I unsuccessfully bid on the "Allies" wraith scientist coat worn by James Lafazanos) including concept art, a commander stunt coat, belt segment, wraith hard drive, rifle with working lights, probe with working lights and Michael's coat from 'The Prodigal'
http://myworld.ebay.co.uk/propworx2/