Sony does not offer a region-change service for PS3 consoles. The region is hard-coded into the console's EID (encrypted ID) and Blu-ray drive firmware. However, the impact of region locking is narrower than you might think—and there are practical workarounds.
Keep your EU console. Make a US PSN account for store access. Import discs if needed. Only pursue CFW if you accept never using PSN again.