The new version of Price Check was just accepted in the AppStore. This release introduces a new quick way of switching between search engines with pre-fetching of the result from other search engines.
There are also a new slew of supported search engines and some fixes to the ones that were already there. With it becoming increasingly difficult trying to figure out which of the list of engines support giving prices in your local currency the setup page was also reworked to be country oriented instead of search engine oriented.
We are still waiting for Apple to approve the completely free version of Price Check, but we have a good feeling about it happening within the next couple of days.