1 - depends where you get them
kashmir from cji - £10 - 20
g1 from H4L - £75
2 - yes
3 - best to get pressed and handled clefts of ur likley to screw up ( on the forum Talisman and matt from H4L are good bets)
4 - you can do it with just a plain - but drawnife , spokeshave, travisher, rasp , sandpaper, twine , pva glue
5 - not as such some batmakers will make a bat with you but for £200 + (good value for the experiance IMO )
all these answers and more can be found by searching in the bat making section
hope that helps