hmm the wii price is ok i guess, but if you cant venture out to grab one at that price, I believe SDM has a sale that goes on until today for 249 as well...
The new arcade price is probably due to the new arcade models that just rolled out a little while back. The new arcade boxes look different and have the jasper model with the memory card built into the system. I think most stores did not use a new sku and just went with the new price for all the arcade systems.