As indicated, Sony has not officially announced pricing and delivery for EX3. The unofficial word is a list of US $13K. If it holds true to form with EX1, MAP should be no less than $10.5K.
Any pricing speculation on EX1 is just that-- speculation. These are impossible questions to answer. Pricing is a function of dollar exchange rate and supply/demand. The prices could go up because of the dollar or they could go down.
Either way, the EX1 and EX3 are two different market segments.