I am setting up a 55 gallon tank and i eventually want to put some discus in there and where is a good place to order them online that in not more than $30 a fish the is 2'
While any individual's financial resources have a great say in how much is spent on hobby fish, particularly for discus which are indeed expensive -- its false economy to try to save $ by buying very small discus, like 2" fish which are not yet even into the juvenile stage.
If you're a newcomer to discus, please appreciate that a 2"discus' immune system is hardly yet developed, and it's readily prone to early ill health issues, not to mention stunting, if not kept & raised under very stringent conditions, which include large daily water changes, multi daily feedings, and pristine water quality conditions.
I've known of dozens of people without lengthy discus experience buying say for example, a half dozen 2" fish @ $25. each ($150.), only to lose every one of them within a couple of months. Those same people soon come to realize that they could have bought say, 3 - 4" fish @ $50.each, ($same $150.), kept them alive with a little careful attention, and successfully grown them out to beautiful adult fish. I'm sure you 've gotten my point. Don't waste your money buying 'baby' discus, at least not until you gain a lot of experience keeping them.
Please forgive me for seeming to sermonize, but I've kept discus for many years, and have a pretty good idea of what it takes to successfully keep them.
Do yourself a huge favor, and only consider getting discus of near 4" to start with, to lessen the risks and optimize the maintenance of their health, well-being, and longevity.
May I respectfully suggest you have a read first, if you haven't already done so, of my 'Beginner's Guide to Getting Started with Discus', located here with the first & only Sticky in the "FISH" section - 3rd article.
Then when you've digested that, and you still want to go ahead with getting discus, then a quality source near you is Chicago Discus (Josie). She is a sponsor on simplydiscus.com and also has a website you can access.
She has an excellent reputation as a breeder & importer of quality fish & I recommend her. She airships for a reasonable price.
BTW, your 55 gal tank is large enough to keep 5 adult, or near adult fish, which is usually the minimum number of fish recommended, to avoid bullying/pecking order issues .
Discus are hardy fish, and easy to keep, if one follows a few common sense rules and guidelines.
Best of luck to you.