I ordered an S3 cooler from autodoc last year and received one with gti thickness (32mm) rather than the proper 40mm as described online. Was a complete PITA to return it to them as the double boxing it came in generated oversized carrier charges and I was getting quotes of @£75. I ended up sending it back in the single box which slipped into the normal dimension charges. There was then a little dance about refunding my money rather than holding it as a credit for future purposes.
If you look more closely at at the one you linked, it says plastic end tanks rather than the earlier aluminium shown in the photo. Not that that should be an issue as they supposedly flow better however I would be a little cautious about using this seller.