[I am glad that I can sell a strike for $349.99 knowing that the buyer is getting an item that will be worth $450-$500 within months]

Do you offer a money-back guarantee with that statement, or is it just sales hype?

No $200 strike on Ebay has sold for even $450 in the past 30 days. Several of them have sold below your price.

http://search-completed.ebay.com/search/search.dll?GetResult&query=%24200&from=R2&ht=1&category3=3443&combine=y&st=2&SortProperty=MetaEndSort