Combine domains

[DTSP]

Hello,

 

I'm looking for a solution to combine domains when user buys one. That means, I want to have an offer which proposes 4 TLDs at the same time, a package with 4 domains TLD.

 

For example, the user choose the package with 4 domains

Usually, this is the costs of the TLDs

.com : 10$

.net : 9$

.org : 9$

.info : 9$

 

I want that user who chooses to buy 4 domains with this 4 TLDs, have a discount price, that means if he choose to register:

- abcd.com

- abcd.net

- abcd.org

- abcd.info

 

He will get them all for 30 $ and not 37.

 

Any idea please how can I do that ?

 

Reg