Depending on how much of a fan you are of Secret of Mana, you can buy Seiken Densetsu 3 (sometimes listed as Secret of Mana 2) on ebay or amazon. The game was never officially translated or released outside of Japan, but the fan translated ROM by Neill Corlett has made its way onto fully-functional snes carts. An A++ JRPG with a 30-40+ hour story. Six diverse characters to form a party of three with, each with 6 potential "classes" or jobs.
The cart isnt cheap per se, but it isnt even close to the most expensive ones these days. Shouldn't cost you any more than Chrono Trigger did.