The proper way creating hosting plans

Hi there guys, (i think im posting to myself but we will see)
 
What is the propper way of creating  hosting plans pls
 
Lets say i want the following plans
 
 
Gold
unlimited email/database trafic ect
 
Silver
20 gb hd space/20 email addresses/
 
Bronze
10 gb hd ect but you get the idea
 
Email
basic email package
Ftp
basic ftp package
 
Does anyone have any ideas on what woudl be about right ?
 
Thank you

Linux Personal Plan 
This is an ideal package for personal website hosting..

1000 MB WebSpace
10 GB Bandwidth 
1 Free Domain Registration
15 Email Accounts
1 MySQL Databases
3 Sub Domains

Windows Express Plan 
Business class package that caters small Business owners and more discerning webmasters. 

7500 MB Web Space
150 GB Bandwidth
Instant Hosting Account Setup
2 Free domain registration
5 Add-on Domains Allowed 
10 Sub Domains Allowed
PHP, mySQL Support
75 Emails Accounts



You can extend/reduce services like php/mysql/mail. The important one which does matter in hosting package is Disk space and Bandwidth