I think the Dynamo tables are basically the same quality as the Tornado Sport, both of which sell for about $900 new. Unfortunately, the people who paid list price for these tables are often shocked at the depreciation when they try to resell them. Good, used, top-of-the line coin-ops can commonly be found for $500-700 and the older brown marbles for even less, so $350 for this table seems high. Personally, I wouldn't take this table for free because the quality just isn't high enough to make it worth the space it occupies.
Kevin