maybe its a distress property or short sale with all the accrued interest since February rolled into the listing price.
Maybe seller is incorporating their next tax bill into the price.
Maybe it's Thursday.
If you like that house and wish to own it, make an offer through your agent for the PRICE YOU WANT TO PAY, and they either accept it, counter offer, or reject it. either way you move forward or you move on. obsessing over one house for 6+ months watching it isn't healthy.
Just a guess...
If it is new construction, pre-construction prices are usually lower and then go up as the house is built. Sometimes a house is priced as is and a seller does some major improvements...price should go up.