Man that's a tough one. The completely unhelpful answer is that a fair price is whatever someone is willing to pay. I know when I was table shopping I was definitely aiming for a bona fide Tornado. Not sure what the market is for a pseudo-Tornado. I fear there aren't many customers who are looking at this price point who will appreciate your upgrades. I wonder if some might be scared off by the fact that the original table no longer has its original components? Maybe try advertising for $250 but don't mention the upgrades, lol.