While you can certainly spend over a grand, you still can find them on the bay for as little as $650 - $700 if you have patience and are willing to look around a bit.
Will depend on condition, the brand of the donor watch, whether or not the seller actually lists them as a v72, or if they claim to have been serviced.
It also helps to know the in-house movement numbers from some of the brands because there are sellers that don't know what they really have. I also keep a list of those watches (Certina, Gallet, Clebar, etc.) that I see advertised with a v72 and then look for sales posts without the movement listed in the description for those watches later. To find a deal on the bay anymore, you have to get creative.
PS ... the guy re-listed it as a private auction for a specific person and it appears to have sold for $500.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rt=nc&nma=true&item=160509099587&si=FNi%252FRn1x29HyvIehUX6WcFvkq4s%253D&viewitem=