You might get lucky and find that the set works fine after its missing tubes are installed, a new line cord installed, and the electrolytic filter caps are renewed. That happens to me about 50% of the time- these old sets are incredibly robust. If luck escapes you, it might be exceeding difficult to get this particular set working.
Sorry I can't be more enthusiastic. See if he will give it to you if you pick it up. What are the seller's other options?
You may want to warm up with a little AC/DC set from eBay, before tackling this one.
The nice thing about this radio is that after it is working you can get FM on it. However, be warned, it is a beast.
Best regards,
Bill Grimm