One of the largest porn Web site Pornhub.com has written a letter to the owner of Kim Kardashian's sex tape, expressing its interest in buying the high definition video clip.

The porn Web site's move came after an unknown person contacted the tape owner Vivid Entertainment's chief Steven Hirsch via his attorney in a bid to buy all the rights to the video.

In his letter to Steven, Pornhub.com's marketing vice president, Corey Price asked him to bring down the price of the tape to $5-10 million range, and expressed that it would like to begin the deal with an offer $5 million.

Price also said that though the brands of Kim Kardashian and her ex-boyfriend and co-star in the video Ray J. have so much of value but the DVD is not worth $30 million. Vivid quoted $30 million for the tape to the mystery buyer.

TMZ posted the letter on its site.

Last week, a TMZ report had revealed that a mystery buyer hired a lawyer in Tennessee, who wrote a mail to Vivid's Steve Hirsch, saying: I was approached by a private party who has asked us about looking into the possibility of acquiring all rights of the Vivid, 'Kim Kardashian Sex Tape.'

The party we represent does not intend to distribute or broadcast the 'tape,' but hopes to completely remove it from the market, the lawyer added.

The lawyer also expressed in the mail that his party would wish to buy any other footage in control of Vivid Entertainment that involves Kim.

The video that was shot prior to Kardashian's celebrity status has generated greater interest following her highly publicized wedding to Kris Humphries.

With the buyer being completely unnamed by the lawyer, rumors are making rounds that it could be Kim herself who wants to buy the rights to the video as she is the one to be benefited most from the deal.

I was surprised to receive the attorney's letter offering to buy kimksuperstar.com, Vivid Chief, Steve Hirsch, told CNN. Initially, I thought the offer wasn't real, but after reading it through a second time, I am definitely intrigued.

Kardashian sued Vivid four years ago when Vivid first made the sex tape public. The legal battle ended with a monetary settlement in which Kardashian would share in the profits, Hirsch said.

While the identity of the buyer has been kept strictly confidential many suspect the offer to have come in from the reality TV star herself as she settles down in her marriage, and has shown interest in buying the video before.