Reserve price determination requires Valuation Cell valuation; Appropriate Authority fixes reserve price, reductions need prior Board approval. Procedure requires referral of acquired property to the Department's Valuation Cell for a Detailed Valuation Report with at least three comparable sales; the Appropriate Authority shall set the reserve price based on that report, and any proposal to fix it below the Valuation Cell's valuation must be submitted to the Board with detailed reasons; the determined reserve price has a limited validity period.