Ishneet
Welcome to Pprune and particularly this forum.
You will find there are plenty of people - with experience to offer advice - but they do expect people to do a bit of research before posting a question that is asked over and over again.
Pleae use the Search facility and spend some time reading through the "Sticky" notice where you will learn a lot about the industry and the approximate costs.
I'm closing this thread but PM me when you need to ask further questions!
HWB