Yes, I play with a deck of physical cards(As opposed to digital online cards?) That does put a limit on which cards are available within a set budget. Most of the cards I have access to are from the movie block, with some from the shadows block, and practically none from later on.
I understand.
Is the trading on this site for electronic cards only,
As far as I know, there is no trading for electronic cards. The official LOTR Online no longer exists. The best place to play LOTRTCG online these days (for free) is:
http://www.gempukku.com/gemp-lotr/...but there is no trading of electronic cards between players. You can collect cards in your "My Cards" collection via virtual booster packs, but you can't trade them to other players. That site is a great way to explore what cards are out there that might help your deck, btw. You could recreate your physical deck electronically and try it out with various cards you don't yet own, to see which cards might be worth buying. In casual play using "All Cards" you have access to as many copies as you want of any card ever made, for free.
or is it a marketplace for trading physical cards via, for instance, mail?
There is some trading on this forum for physical cards. In my experience, the best way these days to get a single you really need, is to look for it on ebay.
Also, what does my deck qualify as if not expanded? Thanks~HalbaradDunadan
Like you said at the start of your post, most likely your deck qualifies as legal for Movie Block Format. If you are using a King Block site path, then your deck is most likely built for Movie Block Format. There are tabs on the gemp-lotr site that will tell you what cards are legal for each format, or once you recreate your deck in the gemp-lotr Deck Builder, the Deck Builder will tell you which formats your deck is legal for.