( 1 ) THIS batch of writ petitions under Article 226 of the Constitution of India assails the price demanded from the intending purchasers of the flats allotted under the "registrarion Scheme on New Pattern - 1979" (the Scheme for short) sponsored by the Delhi Development Authority (the D. D. A. ).

( 2 ) THE petitioners are registrants of flats under the Scheme. In the brochure published by the respondent D. D. A. regarding the Scheme, the terms and conditions were specified along with the details of Scheme "for- mulated to reduce the sale price of MIG/lig and Janta flats, so as to be within the reach of the common man". Apart from prescribing period of registration, eligibility criteria, "area", "accommodation", the "likely cost" and other conditions were stipulated in Clause 13 and 14 respectively. Dispute being only qua the cost, the same set out in Clause 13 for each of the three categories of the flats was: ("the prices are indicative and do no represent the final cost") Clause 14 of the said brochure stipulated:

"it may please be noted that the plinth area of the flats indicated and the estimated prices mentioned in the brochure are illustra- tive and are subjec