Learn German: Die Verarbeitung ist toll dafür, dass es ein No-Name-Produkt ist. - The build quality is great considering that it is a no-name product.

While obwohl just states a general contradiction ('although'), dafür, dass specifically sets a benchmark or expectation. It translates closer to 'for the fact that' or 'considering that'. You are saying that compared to the low expectations of a no-name product, the quality is surprisingly high.

Why is there a comma separating dafür and dass?

In German, dafür actually belongs to the first half of the sentence (Die Verarbeitung ist toll dafür). It acts as a pointer, signaling that an explanation is coming. The comma is grammatically required to separate this main clause from the subordinate dass clause, which then explains exactly what the dafür was pointing at.

Verarbeitung usually means 'processing'. How does it mean 'build quality' in this sentence?

When talking about physical goods, clothing, or electronics, die Verarbeitung refers to the process of how well the materials were put together. It is the standard German term for 'build quality', 'craftsmanship', or 'workmanship'.

Why is No-Name-Produkt written with hyphens instead of being mashed into one long word?

German compound noun rules apply even when borrowing English loanwords. While native German words usually merge into one solid block, compounds that include multi-word foreign phrases almost always use hyphens for readability. Notice that standard noun capitalization still applies to the English parts of the word!