Greetings,
I have machined 30 Carbine die sets in the past. In fact, I have a request in now for a new set.
I am a bit puzzled, is the Star pictured equipped with 30 Carbine dies? Or, are you wondering about converting to 30 Carbine?
As to value, do a search on eBay for completed auctions. I have not seen a 30 Carbine sold lately; but, it might bring a good price as it is not too common. Best scenario is to get two beered up bidders after the same tool.
Cheers,
Dave