Spouse made less than $3000, will we still get full TAX REBATE?

If my spouse was not married she would not be eligible for the tax rebate because she only made about $1000 in income last year. (well below the $3000 minimum) but because we file our taxes as a married couple we may thus be eligible for the full $1200 tax rebate. Is this true and if so is it fair we get an extra benefit because we are married and file jointly?