Bonsour Becky,
Look on ebay(I think he still has it on) there is a seller who is selling the $200 velvet cases. You get the blue velvet case, new plastic capsule, and the white paper sleve for $4.90 + shipping. You can buy 1 or more then 1 your choice how many. I have bought several of these on ebay from him. They are almost exactly the same as the orginial blue velvet cases. I have no problem with using them with my $200's also had no problem with the seller or recieving the cases.
As for the 4 oz strike--Try Jp's Corner -- www.JPsCorner.com or I suggest you call him Toll Free 888-312-2646
8:00 am to 5:00 pm Monday -- Friday. You can ask him to send you their newest catalog(I think it's free) If 1 of the ladies can't help you she will get Jerry(he might answer). I buy most all of my silver strike cases from JPs Corner. However JPs Corner does not have the $200 silver strike cases.
In case you donot know the plastic cases are sold by millimeters---Example a Coin Safe "direct fit" plastic case to fit a $10 strike is 43 millimeters.
If you have a question or problem email me or call me.
I bet you are sorry it's about time to put up your snow shoes and get out the sun glasses???
Dan