The campaign to purchase Israeli start-up Kenshoo is heating up and reports say the final price tag could be a whopping $300-$400 million.

Kenshoo is a digital marketing software company that provides cutting edge solutions for Search Engine Marketing.

In a report by Calacalist – Israel’s business daily – Sequoia Capital is now searching for potential buyers of the company it backs.

The report also noted that Kenshoo recently froze talks with Google due to a difference in opinion over the Israeli company’s worth.

Kenshoo customers include Facebook, Sears, Tesco, Barnes & Noble and Walgreens, among others.

Kenshoo was founded in 2006. It has offices in San Francisco, New York, London, and corporate headquarters in Tel Aviv.