Garberstreet Electronics is taking preorders for a new IIe Encoder board that interfaces an Apple IIe keyboard with an Apple II or II Plus. The price is $29 USD.
Update: Bill G. verified for me, that his encoder will also work with the Replica-1. That’s great news for me because I’ve been looking for a decent case to install my Replica-1 in, and all the expansion gear I have for it. Instead of hunting for a clone case, or using one of my original Apple II cases (argh!), I can instead use a very common Apple //e. I don’t mind that so much.