your best bet would be to buy from here on the forum by posting a WTB... however, the 3 i recommend for comparison are :
Phoenix Investment Arms
http://www.phoenixinvestmentarms.com/index.htm
Simpson LTD
http://www.simpsonltd.com/index.php?...735b476e8af0eb
Legacy Collectibles
http://www.legacy-collectibles.com/new-items
I always rather deal with advanced collectors of Lugers that have a double they're willing to part with