Try them. You should also ask some of these companies you are wanting to sell for a lot of them have sponsored programs for E&O.
Also I highly recommend to EVERYONE to setup a INC, LLC, LLP or similar to protect your personal assets - remember E&O is an insurance policy but if producing as an INDIVIDUAL your personal assets are largely at risk.
Just FYI a good corporate structure is worth more than any E&O policy... Good luck!
You are paying for the year, a few years back I had to do the same thing, it was in july I think, but my initial payment wasn't quite that high. Their rates have gone up a few bucks every year. I haven't reviewed any other e&o companies, but I have heard is that their rates and coverages are one of the most reasonable. But I cannot validate this.
When you renew your coverage in Dec, you will not have to pay nearly as much but you do have to sign a binding contract each year, it cannot be cancelled.