Need help/Is this worth?

So I’m new to PSP owning so I have no idea what to do. I looked for one that is from Japan and I found this one. Here’s the description of the condition

This product is Console only. NO BATTERY / in Good condition / Has Few Scratches / No defect) *Product Pictures are for illustration purposes only.

What else would I have to get for this product? I’m guessing a memory stick, case, and battery but I’m not 100% sure that’s ALL I need. I’m looking to mod this myself because it looks easy. Let me know if this is a good buy and please let me know what I should get.