California plated MC21R maybe $4500 at the most if it's in decent shape and runs well. That's a guess though because I can't say I've ever seen a R for sale here. I've seen plated 21SE's go for about $5k or so. I did see one really clean 21SE go for around $6500, but that was unusual. Nobody really wants the antique 21's here in the states so the prices are reasonable.

SLF-951 I bought that Repsol that I think you are talking about. Just to keep the 28 market from being skewed by it. It isn't a real Repsol SP, it is a '94 SE. It has Repsol bodywork that has some imperfections but it does run well and I'm very happy with the purchase.