Most sellers would not encourage a seller with only 68 items for sale to open a Store. It is usually cheaper to go with the 50 Free Auction Listings. For you, the only advantage I can see is that you can put a Store on Vacation when you have to travel, but actually you could also just end all your listings and then Relist from your Unsolds when you return.
BTW, there are two spelling errors in your listing titles that may make finding buyers harder.
Some of your titles say FIFT when I think you mean FIFTY. And it's "nickel" not "nickle".
You have more than 40 keystrokes available for free in your titles. Use them all. They are your best method of making your items seen by potential customers.
And use your description more. For example, I think that in 1905 Canadian quarters were made of silver. Since the ones I looked at are not particularly high grade (sorry, but true) they might find buyers as bullion. So the weight of the coin might be useful too.
