Is it a anterior tooth that you lost. Please see if there is enough space to replace it with bigger teeth as milk/deciduous teeth are smaller in size. Please take a X-ray to check if permanent tooth is present inside, if it's in a favorable position, it can be pulled down with the help of Orthodontic treatment. If not may be a bridge, or Implant is a choice depending on the space available

Hi a normal implant will cost u from 25 k - 40k depends on wt brand u use.. in my clinic as we run a foundation charges r less. So wr u get d treatment it’s less

To replace a missing tooth you have many options 1. Dental implant with crown 2.fixed tooth supported bridge 3. Removable partial denture Cost of all the procedures varies. It depends upon the dentist what they are charging. Please contact a good dentist and choose the most favorable option