OPO1-5 prices?

I have been collecting OP for a couple weeks now after coming from pokemon me and my friend have bought a couple boxs worth of packs I am getting boxes for 44 usd for sets like OP01 and 5 but for sets like 3 or 4 I am getting prices like 35 usd Is this the retail Pokemon is hella more expensive but is this cheap or MSRVP