Learn Dutch: Krijgen we statiegeld voor deze verpakking? - Do we get a deposit for this packaging?

In Dutch, nouns ending in -ing are almost always de-words. Because it is de verpakking, you must use the demonstrative pronoun deze (this) rather than dit, which is used for het-words.

What exactly is statiegeld? Is it just any kind of deposit?

Statiegeld is specifically the small recycling deposit you pay on plastic bottles, glass bottles, and cans at the supermarket. For other types of financial deposits (like a security deposit for an apartment), you would use the word borg.

How would I change this into a statement using the consensus adverb immers (after all)?

You would change the word order to make it a statement and place immers after the subject and verb: We krijgen immers statiegeld voor deze verpakking. (We get a deposit for this packaging, after all). This places immers in the middle field to remind the listener of a shared fact.

Could I say krijgen we terug instead of just krijgen?

Yes, that is very common! You can say Krijgen we statiegeld terug voor deze verpakking? to emphasize getting the money back. The sentence as written is simply asking if the packaging has a deposit on it in the first place.