(c)"seller" [with respect to sub-section (1) and sub-section (1F)] means the Central Government, a State Government or any local authority or corporation or authority established by or under a Central, State or Provincial Act, or any company or firm or co-operative society and also includes an individual or a Hindu undivided family whose total sales, gross receipts or turnover from the business or profession carried on by him exceed [one crore rupees in case of business or fifty lakh rupees in case of profession] during the financial year immediately preceding the financial year in which the goods of the nature specified in the Table in sub-section (1) are sold.