( 1 ) THIS revision petition under Section 115 of the Code of Civil Procedure (for short the Code) is directed against the judgement and order dated 21st February, 1984 requiring the petitioner to pay ad valorem court fee on the plaint. Briefly these are the facts. On 12th November, 1982 the petitioner-plaintiff made a bid of Rs. 24,95,000. 00 for acquiring commercial Plot No. 5, measuring 243 sq. meters in the Community Centre, Wazirpur Industrial Area, Delhi at a public auction held by the Delhi Development Authority, defendant respondent and he was declared to be tha highest bidder. He paid a sum of Rs. 6. 50,0001- as earnest money by cheques which were encashed. The defendant by letter dated 24th March, 1983 accepted the bid of the plaintiff and required him to pay the balance amount of Rs. 18,45,050. 00 within 45 days thereafter. The plaintiff by letter dated 7th May, 1983 requested the defendant to grant extension of time for a period of three months. By letter dated 12th June, 1983 the defendant extended the time for payment upto 4th August, 1983. On 15th July, 1983 the plaintiff while cknowledging the defendant s letter dated 29th June, 1983 wrote to it that the