Cheapest way to replace OEM suspension?

I have the stock suspension on an 05 tacoma, and have 94k miles.

I do not want a lift, or anything fancy..

What do i need to replace if I just want to replace everything with OEM parts?

What is this leaf pack people are talking about?

How much would it be to replace everything with oem suspension parts?

Is it worth it to get slightly better parts? I would only do it if the price was negligible...

 

Probably would be cheaper to get slightly better parts. Bilstein 5100 shocks (optional lift), Eibach or stock coils, ?kc leaf springs?(I don't know the company) maybe

Edit: http://www.generalspringkc.com/