In limit, you need to have 100 - 200X the big bet. If you want to play $1 / $2 limit, you need to have between $200 and $400 in your online account. (preferably closer to $400)
Wouldn't 100-200x Big Bet for $1 / $2 be $400-$800 ?
Or do you mean 100-200x Big Blind?