One of my clients is requesting for me to setup an E-Commerce site for him. I'm good with wordpress and have been making sites for clients on that, but have never done an E-Commerce site. Should I stick to making the E-Commerce site with wordpress (with themes from Templatic) or invest in some other tools that will help create an E-Commerce site either in wordpress or off? My plan is to make more E-Commerce sites in the future for businesses so I would not mind investing a little in some good tools. Hopefully I was clear. I'm looking for a fast response so if you have any advice I'd really appreciate it.