REUTERS - May 30 - InterActiveCorp's Match.com unit offered to buy all of the outstanding shares of Meetic for 15 euros a share. Match.com already owns 27% of the French online dating service. Meetic is valued at 347 million euros, or $497 million. The offer is 7.3 times EV/EBITDA, with a PE ration of 13.9. Match has no plans to delist Meetic.