Not new to dcity but gave up after a few weeks when it was still with only first edition cards. Felt like I did not get the ROI as the new edition came out and value of cards were free falling. I am assuming it is now different and there are multiple paths to obtaining better ROIs. What I did not notice you mentioning was if with this tech city we are able to obtain new tech do we hold it to earn more or sell it to reduce principal cost? Is it even possible to sell the new tech? Thanks.