The PLA chip (906114-01) is no longer sold as spare part. This PLA Use a 27C512 PROM 90ns from ST (instead of an EPROM).
This means you get a good compatibility (like 99%) with all Software and Hardware available for the Commodore 64.The Easyflash cartridgeworks fine with the C=PLA
For this article the final price include the shipping cost.