1. I bought bundle fonts at 1,000 dollars.

2. I bought font bundles at 1,000 dollars.
3. I like this bundle font.
4. I like this font bundle.
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Which ones are grammatical? Which word order is correct, bundle font or font bundle?

I'd say that 2 and 4 are correct. The meaning of "bundle" is clearer when the type of bundle is stated first.