Hello Spab,
Your user-profile does not indicate your country of location, but I will assume the USA.
Here are some dealers that have web-site sales in addition to the WOL site you have already :
http://www.simpsonltd.com/
http://www.fgsinc.8m.com/
http://www.relicsofthereichs.com/
http://www.collectorsfirearms.com/index.html
http://www.joesalter.com/
http://lmd-militaria.com/
http://www.pugsguns.com/
You can find many more if you do a Google search for "luger" or "luger pistol", etc.
The advice given by others, above, is very good. Spend some time and money on luger books to become more knowledgable about these pistols. Maybe buy a $ 400-600 shooter luger, first, to have fun with the gun and learn about its mechanics. Find a luger collector near your home that can help mentor you into knowing what to look for in original versus refinished works. Many refinished pieces are being peddled as "original"...so beware.
It may not be what a seller tells you about a gun. It may be what is "not said" about the piece that you need to know and ask about. A local gun shop owner near me jokes about this and calls it "the policy of ommission"...
If considering web-site sales, get the description of the luger in writing via emails and insist on a 3-5 day inspection/return policy. This written documentation may help you recover your shipping costs (both ways) if a gun is not "as advertised". Recently had an outfit tell me via email that "the concept of originality is too complex to discuss via email and a telephone call might be better". This left me a little cold so I passed on the gun as I sensed some evasiveness. Telephone calls are always good, but follow-up with a written email confirming those discussion before sending money. Ask the seller to read your confirming email and ask them to send a reply-email that he/she agrees with the conclusions in your "documentation" email.
Good luger hunting !
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />