I purchased the magehit call for price module. https://www.magentocommerce.com/magento-connect/call-for-price-14.html I strongly suggest others do not do this.
1. It is not a module but several hacks without a professional upgrade path.
2. It doesn't actually hide the price! Price is still visible in source. This is very poor coding.
3. Multiple bugs in current version such as not working with grouped products on the stock RWD theme. Doesn't work on IE or Edge due to javascript error unsupported property. Uncaught warnings in system.log, etc.
4. The developers don't speak English well and communication was very difficult. We were never actually able to get it working.
End result is I paid them money and wasted a lot of time on something that does not work. I'm unable to update my rating on the magento extension site so I'm putting it here in attempt to help other community members.
If you need a call for price module I strongly suggest you avoid this one.