I've been in contract with my agent for one year. She has submitted to 16 publishers and has reported back 7 rejections and claims that the rejections are standard responses with no feedback. Does anyone have an opinion on how long it takes for an agent, on average, to make a sale? I would welcome any comments.
There is no average. It's all about the individual book. A book an editor loves can sell in a week. A books various editors do not like may never sell. Most fall into this category. Unfortunately, having an agent take on a book never guarantees a sale, and often doesn't even improve the odds of a sale.
Simply put, the first editor who likes the book enough to push it through an acquisition board is going to accept it. The better the agent is at finding good,publishable novels to represent, and the more she knows about individual publishers and editors, the more likely it is that she'll find such an editor fast.
As for feedback, the agent should be showing you the rejections, not just telling you about them. But editorial feedback is generally as useless here as it is anywhere else. Most editors include a line or two of feedback when rejecting something an agent submits, but it's usually polite hot air, and means nothing. It really is just politeness.
If the agent receives real, meaningful feedback, she'll be all over it, and will let you know about it instantly.
But however it goes, there's never an excuse for an agent not passing along the actual rejections for you to read, standard or non-standard, feedback or no feedback.