Did you have one? Yes at 26 weeks as my research told my that was the best time
Roughly how much are they to have done? $80 & no rebate as it was just a look see. It was a while ago now so I think it would be more.
Was it worth the money you paid? Absolutely. Although it nearly wasn't. DS wasn't co-operating at first. They could only get rather dodgy pics as he wasn't in the right position. After jiggling a bit it got even worse! They weren't having a busy day that day so they re scheduled for later & then DS was much better behaved. They told us that we got some of the best shots that they'd got in months.
Can you only get them done in particular places? Yes. You can check online for QDI but I'm not sure about other places.