The problem is rear ride height. If you get anything other than dealer supplied Tokico blues, your rear end will sit different (lower or higher I have no idea) because the spring perches are different.
From onlinemazdaparts rep here on the forum the stock Tokico Blues will run $172 a piece, which is ridiculous. If you check out the suspension thread in my signature that will give you a run down of the coilover options available. If you're looking for regular Tokico Blues that will run you $350 for the struts. Lowering springs run anywhere from $120 to $300.
Installation at a shop will run $500 most of the time, but rarely will a shop install parts that you bring in because then they don't make any money from the parts sale.
OT: I also just realized that njaremka isn't too far from where I live.