lost world -where can i find this?HELP ME!

OK IM A FAN BUT IM HAVING SOME TROUBLE LOCATING A COUPLE OF LOST WORLDS.THERE IS ONE CALLED GLADIATOR ABOUT ROXTON,ONE CALLED VAMPIRES ABOUT MARGARITE,AND LAND OF THE APES.I CAN FIND ALL OF THESE ON R2 FORMAT WHICH IF YOU KNOW WHAT IM TALKING ABOUT SUCKS!IM IN AMERICA HELLO,THE DOMINENT COUNTRY.ANYWAYS I CAN FIND THEM BUT THEY WONT PLAY ON NORMAL US DVD PLAYERS....SO I WOULD ACTUALLY HAVE TO BY A SPECIAL DVD PLAYER TO WATCH THEM.IM A FAN....BUT I DONT KNOW IF I LOVE IT ENOUGH TO BYE A SPECIAL DVD PLAYER 4 IT.OH,I JUST THOUGHT ID MENTION...THERE IS NOT GOING TO BE A SEASON 4...GET REAL!I LOVE IT AS MUCH AS U BUT COME ON...THEY WONT BRING IT BACK.I THINK THEY MIGHT REALIZE THE MISTAKE THEY MADE BECAUSE OF THE AMOUNT OF DVD SALES AND MIGHT THINK THEY CUT IT TOO SHORT BUT SUCH IS LIFE...THEY DID THE SAME THING WITH FIREFLY AND THAT PISSED ME OFF 2.