Really a hard call to make for someone else... but here are my .02...
if you absolutely must purchase new... or you are 100% set on a specific brand/model of wine cooler... the igloo/coleman cooler route is going to be a much cheaper option.. and you will likely get a lot more storage space out of it (a 150qt igloo is going to provide more space when set up properly than all but the largest wine coolers)..
but.. if you are willing to go the used route... and are not 100% sold on a particular brand/model.. you can probably get into a wineador for roughly the same money as you will spend on coolerador...
Used wine coolers ranging from 12 bottle to 28 bottles are all over my local craigslist.. all the time... normally for next to nothing in cost...
I paid $20 for my 12 bottle cooler.. it was new, and still in the box... its a "cheapie" (emmerson brand).. but it seals like a champ, and keeps a steady 65 temp all the time.. it had been a christmas present for someone that didnt want it, and she was willing to take what I would offer her just to get it out of her house..
I threw in 2 shelves (made myself) and 4x trays from Forrest .. along with a single tray from cheaphumidors.com.... at an all in cost of about $65 (including shipping)... and for less than $90 I was in business....
there are several wine coolers on the San Diego CL right now that are in the $35-$120 range that look like they are probably in decent condition.. that are about the same size as the one you are already looking at.. to include a couple of vinotemps.... Im betting if they are asking $35-$120 that you could walk away with the low end one for $25.. or one of the higher end ones for less than $100...
http://sandiego.craigslist.org/csd/app/3691659673.html
http://sandiego.craigslist.org/nsd/app/3706570576.html
http://sandiego.craigslist.org/ssd/app/3697806778.html
http://sandiego.craigslist.org/nsd/app/3697236956.html