You are doing the right thing by trying less expensive eel before you try highly priced one. I know you were trying to say that the eel looks good enough to buy, eats well too. the owner was trying to show off by feeding him by hand. the infection from a bite of any eel is the biggest problem. the real reason eels bite is not because they want to do it for the most part, but because they can't see all that good and can mistake your fingers for food. please remember to cycle your tank before you bring any eel home. also, remember what Theoldmanofthesea is telling you about what to feed eels as far as veriety goes. you can't feed any fish silversides only and you don't really want to feed your fish live feeders because they can have health problems or parasites and you don't want to infect your eel with some kind of desease. you need to cycle your tank for about one and a half month, however you can cut it down to 14 days if you use "biospira" during cycling. even though "biospira" claims on the box that you can cycly a tank in one day (or something like that) don't believe that, because I called Bio-spira company and they told me that that's not true but in reality it's 14 days.