Issues needs a little action...

...but that's not why I'm continuing this.
Yes, you will get a better deal when you buy cards more cheaply.
It's a problem when card shops go under though because non-card shops (especially general entertainment stores) are generally less accepting of gamers than the shops are. Say all you want to the contrary (although I doubt it will be much). Gaming communities do better when there is an outlet for the many people who are interested in the games but lack a community of friends outside of the stores.
Now, train, if as you say you buy everything from your gaming shops, we aren't berating you personally...
It's just that other people (me included) may not spend too much money on gaming, and the more those people go to gaming stores and not to entertainment stores, the better for the gaming community.