From my latest excursion under the van, yes, that used one looks to be a Vanagon tank upside down.  Quite pricey....
 

Bryan
 

> Date: Mon, 2 Aug 2010 01:16:33 -0400
> From: eduntz@HOTMAIL.COM
> Subject: cheap new and expensive used gas tanks
> To: vanagon@GERRY.VANAGON.COM
> 
> I happened upon these while perusing eBay. I'm not suggesting anyone buy either of these, of course, but I found them (and the extreme price difference) interesting.
> 
> Used tank for $102, and $162 shipping, total $264. The picture either shows the underside of the tank, or it's not a Vanagon tank. 
> 
> http://cgi.ebay.com/ebaymotors/1985-VW-VANAGON-FUEL-TANK-1983-1984-1985-/380252093987?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item5888ca7e23
> 
> New tank for $46.98 and $49.99 shipping, total $96.97
> 
> http://cgi.ebay.com/ebaymotors/1990-1991-1992-VOLKSWAGEN-VANAGON-GAS-FUEL-TANK-NIB-NEW-/250510594205?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item3a5398509d
> 
> The place selling the new ones has several listed for different prices, but the years that they list don't match up to when VW changed the fuel filler inlet size. 
> 
> Ed

 
> Date: Mon, 2 Aug 2010 01:16:33 -0400
> From: eduntz@HOTMAIL.COM
> Subject: cheap new and expensive used gas tanks
> To: vanagon@GERRY.VANAGON.COM
> 
> I happened upon these while perusing eBay. I'm not suggesting anyone buy either of these, of course, but I found them (and the extreme price difference) interesting.
> 
> Used tank for $102, and $162 shipping, total $264. The picture either shows the underside of the tank, or it's not a Vanagon tank. 
> 
> http://cgi.ebay.com/ebaymotors/1985-VW-VANAGON-FUEL-TANK-1983-1984-1985-/380252093987?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item5888ca7e23
> 
> New tank for $46.98 and $49.99 shipping, total $96.97
> 
> http://cgi.ebay.com/ebaymotors/1990-1991-1992-VOLKSWAGEN-VANAGON-GAS-FUEL-TANK-NIB-NEW-/250510594205?cmd=ViewItem&pt=Motors_Car_Truck_Parts_Accessories&hash=item3a5398509d
> 
> The place selling the new ones has several listed for different prices, but the years that they list don't match up to when VW changed the fuel filler inlet size. 
> 
> Ed