a six inch silver is not 100...its more than twenty but wont fetch 100. if it was a black or a red then the price would be higher. What size tank are they going into. you do realize that arowanas need, well, HUGE tanks
also you have to realize that the LFS needs to make money and will buy a fish MUCH cheaper than what they will sell it for. People wont want to pay LFS prices so your going to need to sell it for much less than a LFS. Either way you look at it your not going to get LFS prices.