With all due respect Ken, I wouldn't send good money after bad. That same message was their attempt last winter. I don't know if it is a deliberate attempt at a scam, or just that they don't know what they are doing.
Either way, I wouldn't waste money. I tried contacting them several ways and several times when they posted that on the website last winter, NO answer ever came. Not a single reply. USPS will only give you a 'receipt' of the certified letter, but can't make them reply.
Email doesn't work, nor do any phone messages.
Sorry Gentlemen, but I think we are losing a great treasure here.