2nd gen 5 lug conversion

I might try this on my car. Is it pretty easy? How much should everything cost to do it? One guy on ebay sold everything to do it for 100 plus 50 for shipping (but the rotors looked like hell).

When I said "how much", I meant how much from a Mazda junk yard, not new parts...

One more follow up question. Are there any other Mazda models that have interchangable parts for this that i could find at pick n pull or something for less?