In case of Ready to move flats in Jodhpur, all the payment has to be made upfront and all at one time. There is no stages in payment like you have in Under construction properties. So even if you are buying it on home loan, you have to pay all the down-payment, registration charges, stamp duty etc all at one go.
The biggest advantage of a ready-to-move unit is that you know what you buy. When you buy a ready-to-move-in house, the biggest risk that you eliminate is project delay. You are not required to wait for the completion of the apartment and other amenities in the project.