New Tama owner! best places to buy?

Hi ;w;! I used to love tamagotchi as a kid and recently purchased a Tamagotchi P's with a dream coffret pierce and love it so much! I was wondering peoples personal favourite places to buy tamagotchi accessories/pierces/tamagotchi models/etc? I'm thinking of buying a Tamagotchi 4U/4U+ and I'm looking at getting more pierces but I'm not too sure where to look or how to price around ;-;! any help would be appreciated! (I hope this question is okay to ask!)

People usually use ebay and Amazon. For newer, Japanese Tamagotchis you could use CDJapan, HLJ, and Amiami.

I try to get them from departmental stores. If I can't, I would get them Rakuten, a well known Japanese online store. If there's no stock, and I'm going to Japan soon, I'll try to go to the tamagotchi departmental store, the Tamadepa.

It's located in Tokyo, on the Harajuku district, although it was originally located in Tokyo dome. There is also a TamaDepa located in Tokyo station's underground "character district" later renamed "Tamagotchi store Tokyo" in 2013.

Edit: Spelling errors and wrong info.