Broadway Photo will ask you to call them after you place your order online so they can sell you an extended warranty and accessories you may not need. Just be ready for that. You definitely don't need the warranty if you plan to hack your Z3. Also they are not an authorized Pioneer dealer so you can't send you Z3 back to Pioneer directly if you have issues.
I know this because I bought a Z2 from them and had to go through the upsell hassel.