Are these the same cabinet?

Effectively yes. Both are Hampton Bay 18 in. W x 12 in. D x 30 in. H unfinished beech wall cabinets. The main difference is that A ships ready to assemble and B is listed as assembled.

Which is better for a quick kitchen refresh?

B, if it is in stock at a fair price. It is assembled, so you can hang it the same day. A saves money but adds assembly time.

Do I need to finish the unfinished wood?

Yes. Both are raw wood and need paint or stain plus a clear topcoat, especially above a stove or sink where moisture and grease collect.

How much shelf space do I get?

A lists two adjustable shelves; B lists one adjustable shelf. If you want more split storage in an 18 in. cabinet, A gives you an extra shelf.

Is the assembled one worth extra money?

Only if the price gap is small. The parts and size are the same, so you are paying for assembly labor and convenience, not better materials.

Hampton Bay 18 in. W x 12 in. D x 30 in. H Ready to Assemble Wall Kitchen Cabinet in Unfinished with CLICKREADY Technology vs Home Depot Hampton Bay 18 in. W x 30 in. H Assembled Wall Kitchen Cabinet in Unfinished Oak with Adjustable Shelf

These are the same Hampton Bay 18 x 30 x 12 in. wall cabinet in unfinished beech, so the choice comes down to whether you want to assemble it yourself. Product A is the ready-to-assemble CLICKREADY version; Product B is listed as assembled. Both are unfinished, so either way you paint or stain to match. No current price was given for either, so check the live price comparison before you buy.

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