I Knew You People Were Behind This.
- Rarity
- C
- Type
- Event
- Color
- Black
- Cost
- 1
- Raw (PriceCharting)
- $1.39
- PSA 10
- —
- No PSA 10 sale tracked
Graded prices as of 6 Aug 2026.
[Main] You may rest 7 of your DON!! cards: If your Leader is [Perona], play up to 1 {Thriller Bark Pirates} type Character card with a cost of 6 or less and up to 1 {Thriller Bark Pirates} type Character card with a cost of 4 or less from your hand or trash. [Counter] Your Leader gains +3000 power during this battle.
TCGPlayer Prices
US marketplace data
Market Price
$0.08
Lowest Listing
$0.02
eBay Prices
Based on 17 recent listings
Low
$0.99
Median
$1.40
Average
$1.33
High
$1.50
Buy Now on eBay
Active listings with affiliate-tracked links
Prices last updated 1 Oct 2026. We may earn a commission from purchases made through affiliate links.
Price history
TCGPlayer market price for I Knew You People Were Behind This., one point per day we recorded a snapshot. 52 days from 25 May 2026 to 1 Oct 2026.
View as table
| Date | Market price |
|---|---|
| 1 Oct 2026 | $0.08 |
| 30 Sept 2026 | $0.09 |
| 29 Sept 2026 | $0.09 |
| 28 Sept 2026 | $0.08 |
| 27 Sept 2026 | $0.08 |
| 26 Sept 2026 | $0.08 |
| 25 Sept 2026 | $0.08 |
| 24 Sept 2026 | $0.09 |
| 23 Sept 2026 | $0.09 |
| 22 Sept 2026 | $0.09 |
| 21 Sept 2026 | $0.09 |
| 20 Sept 2026 | $0.09 |
| 19 Sept 2026 | $0.10 |
| 18 Sept 2026 | $0.10 |
| 17 Sept 2026 | $0.10 |
| 16 Sept 2026 | $0.11 |
| 15 Sept 2026 | $0.12 |
| 14 Sept 2026 | $0.12 |
| 13 Sept 2026 | $0.11 |
| 12 Sept 2026 | $0.11 |
| 11 Sept 2026 | $0.12 |
| 10 Sept 2026 | $0.13 |
| 9 Sept 2026 | $0.13 |
| 8 Sept 2026 | $0.14 |
| 7 Sept 2026 | $0.13 |
| 6 Sept 2026 | $0.13 |
| 5 Sept 2026 | $0.12 |
| 4 Sept 2026 | $0.13 |
| 3 Sept 2026 | $0.12 |
| 2 Sept 2026 | $0.13 |
| 1 Sept 2026 | $0.13 |
| 31 Aug 2026 | $0.13 |
| 30 Aug 2026 | $0.13 |
| 29 Aug 2026 | $0.13 |
| 28 Aug 2026 | $0.12 |
| 27 Aug 2026 | $0.15 |
| 26 Aug 2026 | $0.15 |
| 25 Aug 2026 | $0.15 |
| 24 Aug 2026 | $0.13 |
| 23 Aug 2026 | $0.13 |
| 22 Aug 2026 | $0.14 |
| 21 Aug 2026 | $0.13 |
| 20 Aug 2026 | $0.13 |
| 19 Aug 2026 | $0.14 |
| 18 Aug 2026 | $0.14 |
| 17 Aug 2026 | $0.14 |
| 16 Aug 2026 | $0.13 |
| 15 Aug 2026 | $0.12 |
| 5 Aug 2026 | $0.08 |
| 2 Aug 2026 | $0.09 |
| 26 May 2026 | $0.08 |
| 25 May 2026 | $0.09 |
Snapshots are taken as our pricing pipeline reaches each card, so gaps between points vary. We show this chart only once a card has at least 5 recorded days.
Graded price ladder
Observed PSA sale prices. Tiers with no recorded sale show a dash — we don't estimate them from the raw price.
- Raw
- $1.39
- Ungraded
- PSA 9
- —
- No sale tracked
- PSA 9.5
- —
- No sale tracked
- PSA 10
- —
- No sale tracked
Graded pricing data from PriceCharting.
Snapshot 6 Aug 2026.
About this card
I Knew You People Were Behind This. is a c event card from Anniversary Tournament Pack. Anniversary Tournament Pack (released Jul 2025) is a regular set in the One Piece Card Game lineup. Cards of this rarity sit in their own tier of the collector market.