Im sure opinions will differ, and so will circumstances in each instance, but we shopped Summer 5 quotes, and 5 quotes Winter, and Winter was 2k cheaper for the same pool.

Best of luck

I remember hearing rumors about getting better prices in fall/winter but once I started getting quotes last summer and doing some research I found that it pool builders are generally busy year round and the price isn't going to change much. I got several quotes and they were all pretty much in the price range. In the end I asked the PB I chose to come down about $2500 on their quote and they agreed as long as I agreed to start the build in the fall of 2011 instead of spring 2012. I signed the contract and did a fall build. As goyom mentioned above you might be able to shave off a few thousand but I don't think you will get a significant reduction.

My prices do not drop for seasonal changes.

If I'm slow, I might be more prone to "make a deal" in the winter, but nothing set in stone as far as markups are concerned.