AH Bugged

Why is it when I post an Item to AH, Strangle kelp for example I can charge 1g 50s both bid/buyout but when I post it, it comes up as being sold for like 47gold.. No I'm not using an AH addon and no I don't need to. I started playing yesterday I'm trying to make Gold not lose it repeatedly making fresh posts and then having to cancel them because it bugged on me.. Again.

I'm playing on the Classic Progressive server.

Price per stack vs price per item.

Like blue sais you put the price in wrong box, price per item, put it in price per stack.