OK, I did some more puzzling.
I thought that the game of Chess is pretty universal and popular in literature now and our westernized type of chess actually started in India.
Then I saw the 8 x 8 squares of a chess board (now-a-days) and I looked up the number 8. (Wikipedia is Great!)
Eight is a Fibonacci number, (Wiki it!) like the spirals in the outer part of a sunflower and in lots of other parts of nature.
In Hinduism (not sure if that is important here) 8 is the number of wealth and abundance.
Number 8 is a lucky number in China and in Japan for slightly different reasons, both to do with wealth.
The list is pretty large in Wikipedia about the use and importance of the number 8.
Oh, yeah, the Buddhist Eightfold Path.
Mainly though, I like the reference to Chess.
So, How about 'Eight Stamps Eight Coins'
or '8 Coins * 8 Stamps' or '8 Stamps and 8 Coins'
You could use a chess board (or an 8x8 board) with stamps on one side and coins on the other as your store picture (with appropriate stamps and coins (to do with chess) playing a game (copy a real one from somewhere so the pieces are placed correctly) maybe even with only eight pieces left on either side (if that is possible).
I think it would work nicely. It attracts the nerdy aspect of collectors and the wealth aspect attracts the rest of the populace.
Of course, you must explain somewhere about the history of chess and how lucky it is to buy eight stamps or coins and have sales of buy 7 get one free and 8 x 8 is even better!! And pricing in multiples of 8.
It is the selling of an idea here. The more the idea benefits someone or they feel it would then the more they want it.
Holy smokes, why don't I have a store!?? What am I doing giving away all this great info. My brain is wrung out and hanged on the line to dry! I wish I had some nice chess stamps to illustrate this idea.
As the saying is up above on the top of the page here, Education is the key . . .
You must help people first with their important gathering of the eight stamps and eight coins (of whatever subject) and the abundance will come. What did my friend put in my Rice Krispies!
That was kind of fun. Puzzling I mean. What was I doing this for? Oh yeah, spock1k's store. Ooooh, yeah.
Hope your store is as great as I think it will be, no matter the name!