As you said it can cost lots of differnt amounts depending on what u want to buy. i.e some cots are $1500+ then others you can get for $200 from big w, target etc you could buy a pram from the same kind of shops for $180-$250 others can be thousands! So it is very hard to say yes you could do it for $5000 and you could easily do it for less, I think most people would probably spend around $3000? but you could also spend a lot more. iykwim

I think the est way will be to have a look in different shops, look on the net and see what kind of products you would be looking to get and then you'll have a better idea!