Are you being represented by an agent? If so you need to ask them to run a thorough CMA to ensure that you are not overpaying in regards to other resales. You will of course pay a premium on a new home vs a resale, but it should not be too substantial or else you will feel the hurt when you go to sell in the future. You should also ask the builder about all the other recently sold homes that may have not found their way into the MLS system. They may or may not disclose this to you, but it doesn't hurt to ask!
If you are not being represented by an agent, give me a call and I will do my best to help you evaluate. I am very familiar with the Avonlea development and live in the area as well. You can find my contact information by clicking on my profile.
The community is great because you have a shopping complex just a short walk from where you are.
Also - these townhomes are huge in terms of sq footage. So if I were you, I won't be worried.
Anantha Padmanaban (Andy)