JUDGMENT Bhan, J.-Appellant-Delhi Development Authority (hereinafter referred to as the Authority ) formulated a Scheme known as "Registration Scheme on New Pattern- 1979" (for short the Scheme ) to build and sell MIG/LIG and Janta flats so as to be within the reach of the common man. 2. Registration for the scheme opened on 1st September, 1979. In the scheme the illustrated price of various categories of flats were mentioned. The likely cost of MIG flats with which we are concerned in these appeals was indicated to be Rs. 42,000/-. On 30th of September, 1979, registration was closed. About 1,70,000 persons registered themselves in the scheme. In 1981, allotment started taking place by draw of lots based on randomised allotment. The cost of flats was worked out after taking into account the prevailing rate of land by the Lt. Governor. The cost of construction was worked out by dividing the cost incurred in construction of a pocket of flats by a number of flats in that pocket. Clauses 13 & 14 of the brochure are as follows: "Clause 13. The plinth area of the flats to be constructed under new pattern is likely to be as under:- MIG Between 60 to 65 Sq. Mtrs. LIG About 38 Sq. Mtrs. Janta Upto 24 Sq. Mtrs. The accommodation in the flats under different categories will be as under:- MIG One Living Room, 2 Bed Rooms, Kitchen, Bath Room and W.C. and Open Court-yard. LIG 2 Rooms, Kitchen, Bath Room and W.C. Janta One room, Kitchen, Bath Room and W.C. The likely cost of flats constructed under this scheme will be as under:- MIG Rs. 42,000/- LIG Rs. 18,000/- Janta Rs. 8,000/- The prices are indicative and do not represent the final cost. 14. It may please be noted that the plinth area of the flats indicated and the estimated prices mentioned in the brochure are illustrative and are subject to revision/modification depending upon the exigencies or lay out cost of construction etc." [Emphasis supplied] 3. Due to certain reasons with which we are not concerned at the moment, the allotments could not be made. On 6th of December, 1990 fresh rates of land to be taken into account for costing of flats were approved by the Lt. Governor. Whereas in 1979 the prevailing land rate was fixed at Rs. 62/- per sq. meter, the same was revised in 1990 to Rs. On 6th of December, 1990 fresh rates of land to be taken into account for costing of flats were approved by the Lt. Governor. Whereas in 1979 the prevailing land rate was fixed at Rs. 62/- per sq. meter, the same was revised in 1990 to Rs. 870/- per sq. meter for MIG flats, Rs. 660/- per sq. meter for LIG flats and Rs. 500/- per sq. meter for EWS (Janata flats). The increased rate was approved after taking into consideration all the relevant factors involved. 4. The respondents-writ petitioners (hereinafter referred to as the respondents ) whose turn for allotment came in 1991 were allotted flats in Jahangirpuri. The demand letters were sent to them. Respondents filed the writ petition No. 3267 of 1991 along with Civil Writ Nos. 3198, 3456, 3645, 3795 and 3796 of 1991 respectively in Delhi High Court challenging the rate at which the flats were being allotted. The case put up by them was that the amount being charged for the flats was much higher than what was indicated in the scheme itself. 5. Writ Petition Nos. 3876 of 1992 titled Prem Chand vs. Union of India & Anr., CWP 2787 of 1990 J.K. Dhingra vs. DDA, CWP 728 of 1991 Vinod Kumar Gupta vs. DDA, and CWP 1327 of 1991 Maha Nand Sharma vs. DDA also filed on the same grounds and for the same were dismissed on 24th May, 1993, 16th May, 1991, 22nd October, 1991 and 15th January, 1992, respectively. 6. Writ Petitions filed by the respondents were allowed by the High Court despite the fact that several similar writ petitions had already been dismissed on merits. By the impugned judgment the High Court struck down the revision in the rate of land. The Authority was directed to make allotment of flats at a tentative price of four and a half time of the price offered in the year 1979. Further the Authority was directed to constitute an Expert Committee to go into the costing of the flats taking the land rate at Rs. 62/- per sq. meter. The Expert Committee was to work out the price after taking into account the actual cost of construction made by it for the construction of the flats. Further the Authority was directed to constitute an Expert Committee to go into the costing of the flats taking the land rate at Rs. 62/- per sq. meter. The Expert Committee was to work out the price after taking into account the actual cost of construction made by it for the construction of the flats. If the Expert Committee after working out the cost on the basis of aforesaid works out cost to be more than the price that was provisionally fixed then the Authority was put at liberty to revise the cost and intimate to the respondents requiring them to make the payment within a month of such intimation. 7. Another set of writ petitions 1121/9