Are you positive the V10 will fit inside your case? It is a huge beast. It also has an odd configuration. There is a fan in a horizontal position right over the memory slots. If you have memory modules with the extra tall heatspreaders that look like a comb they will interfere with the horizontal fan.
On top of that the V10 isn't that great. The best bang for the buck is the Coolermaster Hyper 212+ providing your pc case is wide enough to accomodate it and you don't have the extra tall memory modules. Technical reviews are very favorable. If you shop around you can get one one sale for $29.99.
Since you can get a brand new Hyper 212+ that performs better than the V10, offer $20.00 if you are positive it will fit inside your case and not interfere with the memory. Personally I would not buy one new or used.
Without a doubt, the V10 is one of the most visually dominent CPU coolers out there, but it is more bark than bite. If one has the cash and just wants to have something ridiculous and extreme looking peering through a clear side panel, then it is a solid choice. For actual overclocking and thermal efficiency, the 212+ is a steal.