Help me out Coimbatore!

TL;DR: Are we expecting a fair value for our plot or is this valuation delulu and we have to settle for less? The full story: I'm looking to sell off my property in the heart of the city (100 feet road, Gandhipuram). The construction base is 4.7 cents (60x34ft) and 0.8 cent (60x6ft) shared footpath with the property behind. (We can use half of this for upper floors) I'm looking to find buyers for this, but everyone is giving very poor valuation (3.5cr i.e 75L/cent is the max we got) But if we consult with some experts they are telling us this property could easily go for 85L/cent as just across the 100ft road there was a recent purchase by a textile company for a similar plot at 1.15cr/cent. We are happy to sell this at 85L/cent valuation because 85*4.7(base construction plot)=4cr. Are we expecting a fair value for our plot or is this valuation delulu and we have to settle for less?