I think Goldcorp just paid $500 per ounce for their latest aquisition. That is based on there being 10million ounces. Could be a lot more ounces though. WTM will be hard to put a value on as they will be drilling for some time to come. 1,2,5 million who knows. Will the price of gold go up or down also has a big effect on the price WTM will be worth now or in the future and also has a bearing on how much a company will be willing to pay.
I can tell you this though none of the insiders are selling their stock. When they start to sell then that might be a good time to consider taking some profits.