It is basically the same but purchasing from my website means savings for you. TPT charges me 25%+ commission so if you buy from my website, I am able to sell it at a lower price. It's up to your own personal preference on how you want the information.
On Teachers Pay Teachers page, I have the curriculum available for immediate digital download. After purchasing, you will receive a link to my Dropbox account (you don’t need to sign up) and all the files and lesson plans you need are laid out in an easy-to-follow weekly summary. The benefits to this are that you get everything at once, all organized into unit folders, which you can keep online, or download onto your device. I teach with these files so any updates, changes, or corrections are instantaneous for you (unless you downloaded the files).
Here on this site, you get access to the same Drobox links plus the plans are broken down by day with the links you need embedded in each page. You can download each resource individually as needed. Even when your membership expires, the Dropbox links you have will stay active, but you will lose log-in access to the site. Hope that makes sense :)