Hi,
Today I had a visit to Google office for discussing AMP (they had invited me via AdSense account). A Google channel partner is offering AMP implementation for 1000$ with limited support and 2000$ for full support. But I'm not sure whether this is useful for Q2A -- AMP pages are definitely ranked higher on mobile search.
Another query is how bad is having bad content on site- will it have significant negative effect on search performance or simply zero effect?