Best Protocol Index rep sellers
3 sellers for Protocol Index reps, ranked by how good each one is for Protocol Index, with what each one is best for and how to buy.
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Updated 28 October 2026 · 3 sellers checked
Short answer: The best Protocol Index rep sellers on GRAILS right now are Singor (Protocol Index rating 6.6/10), Chaosmade (Protocol Index rating 5.3/10), 3125tiger (Protocol Index rating 5.3/10). Singor: 7 Protocol Index pieces on GRAILS. One of the best Essentials sellers under Carl, has amazing quality and also has pretty much all items. Chaosmade: 8 Protocol Index pieces on GRAILS. Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss. 3125tiger: 4 Protocol Index pieces on GRAILS. Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss -isn't really known for anything. Most Protocol Index pieces from these sellers cost ¥120 (about $18) to ¥230 (about $34), about ¥140 in the middle.
In numbers: GRAILS tracks 19 Protocol Index pieces, 3 rated sellers carry Protocol Index, the middle price is ¥140 (about $21), 0 pieces have QC photos, and buyers clicked buy 2 times in the last 30 days.
Sources: GRAILS catalog, buyer ratings, QC photos. GRAILS sells nothing: we link to independent sellers and shopping agents.
Top Protocol Index pieces
Real listings from the best rated sellers below. Open the QC photos, then buy in one tap.
3 Protocol Index sellers, ranked
By how good each one is for Protocol Index: our notes on every seller, their main brands and price level.
| # | Seller | Protocol Index rating | Price level | Protocol Index pieces on GRAILS | Usual price |
|---|---|---|---|---|---|
| 1 | Singor | 6.6/10 | Best | 7 | ¥120 to ¥150 |
| 2 | Chaosmade | 5.3/10 | Listed | 8 | ¥130 to ¥160 |
| 3 | 3125tiger | 5.3/10 | Listed | 4 | ¥120 to ¥260 |
What each seller is best for
Singor
One of the best Essentials sellers under Carl, has amazing quality and also has pretty much all items. Is Singor legit?
Chaosmade
Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss.
3125tiger
Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss -isn't really known for anything.
Compare the top Protocol Index sellers
Questions
Who is the best Protocol Index rep seller?
On GRAILS the top Protocol Index sellers are Singor (Protocol Index rating 6.6/10), Chaosmade (Protocol Index rating 5.3/10), 3125tiger (Protocol Index rating 5.3/10). Singor: One of the best Essentials sellers under Carl, has amazing quality and also has pretty much all items. Chaosmade: Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss. 3125tiger: Massive yupoo catalog seller, if you are lazy and just want to scroll, quality is hit or miss -isn't really known for anything.
How many Protocol Index reps does GRAILS track?
GRAILS tracks 19 Protocol Index pieces, 3 rated sellers carry Protocol Index, the middle price is ¥140 (about $21), 0 pieces have QC photos, and buyers clicked buy 2 times in the last 30 days. Sources: GRAILS catalog, buyer ratings, QC photos. GRAILS sells nothing: we link to independent sellers and shopping agents.
How much do Protocol Index reps cost?
From the top sellers on GRAILS, most Protocol Index pieces cost ¥120 (about $18) to ¥230 (about $34). The middle price is ¥140 (about $21). Shipping from China is extra, see grails.fit/ship. Prices checked 28 October 2026.
How are these sellers ranked?
By how good each seller is for Protocol Index, 0 to 10. It comes from our own notes on every seller (who is one of the best for Protocol Index, who only does Protocol Index, who just carries a few pieces), whether Protocol Index is one of their main brands, and their price level. The GRAILS Score (QC photos and buyer ratings) counts a little and breaks ties. Paid placement is not part of it.
How do I buy from these sellers?
Open a seller, copy an item link from their Weidian, Taobao or Yupoo store, and paste it into grails.fit/convert. It opens the item on KakoBuy, Sugargoo or any other shopping agent.
How do I check the quality first?
Look at QC photos, real photos of the item from the agent's warehouse. Paste any item link into grails.fit/qc to see them.