I also looked into Dr. Silverman's clinic. They would not give me a quote for IQ and achievement testing over the phone. They wanted me to come in for a consultation at $125/hour and charge me for reading the extensive background material that they request. They said that depending on need, the cost could be from $1000 to $3000. I'm sure that they do a thorough job but I couldn't afford that level of uncertainty.
Instead, I called our district's gt department and asked who else wrote good reports (they couldn't give me a recommendation per se but we talked around the issue). We had WISC IV and WJIII done for about $400. We had some issues around application of extended norms but mostly got what we needed.
