Should you sell Quantum Riddler?
Probably not yet. CardKingdom’s buylist for Quantum Riddler is still below the good sell price, the level that has proven worth waiting for. Set a price alert and we will tell you the moment it gets there.
As of 17 Jul 2026, the buylist price is $33.00, with CardKingdom buying 89 copies.
That works out to -8.3% over the last 7 days and +0.0% over the last 30 days.
The good sell price is $39.00, and it normally sits around $36.00.
The most CardKingdom has paid in the last 90 days is $43.00.
It last touched that best of $43.00 around 20 Jan 2026.
Prices come from CardKingdom. Updated 17 Jul 2026.
How we work out the good sell price for Quantum Riddler
Every price on this page comes from CardKingdom’s buylist, which is what they pay to buy a card from you. We look at the last 90 days of that buylist for Quantum Riddler and only count the times CardKingdom was actually buying it, because a price they are not buying at is not a price you could ever get.
We weight each price by how long it stayed in place. A price that held for three weeks tells you far more than one that lasted an hour, so the steady levels matter more than brief spikes.
From that history we work out three numbers for Quantum Riddler:
- Normal ($36.00). The price the buylist sits at most of the time.
- Good ($39.00). A strong price that comes up often enough to be worth waiting for. It sits near the top of the realistic range with one off spikes stripped out, so it is a target you can expect to reach again rather than a fluke.
- Best ($43.00). The highest CardKingdom has paid for Quantum Riddler while buying it in this period.
We mark Quantum Riddler as a sell once the current buylist reaches its good price, give or take a few percent, and as a hold below that.
What the numbers mean
- Current buylist. What CardKingdom pays for Quantum Riddler right now.
- Wanted. How many copies CardKingdom is buying at that price. Zero means they have paused buying for the moment.
- Retail (NM). What CardKingdom charges to sell you a near mint copy. We show it for context, but our signals are about selling, so the buylist is what we focus on.
Buylist price history for Quantum Riddler
Over the last 90 days the buylist ranged from $27.00 to $43.00.
| Date | Buylist | Wanted |
|---|---|---|
| 17 Jul 2026 | $33.00 | 89 |
| 17 Jul 2026 | $33.00 | 91 |
| 17 Jul 2026 | $33.00 | 96 |
| 16 Jul 2026 | $33.00 | 93 |
| 16 Jul 2026 | $33.00 | 101 |
| 16 Jul 2026 | $33.00 | 102 |
| 15 Jul 2026 | $33.00 | 104 |
| 15 Jul 2026 | $33.00 | 103 |
| 15 Jul 2026 | $33.00 | 99 |
| 14 Jul 2026 | $33.00 | 100 |
| 14 Jul 2026 | $33.00 | 99 |
| 14 Jul 2026 | $36.00 | 125 |
| 14 Jul 2026 | $36.00 | 136 |
| 14 Jul 2026 | $36.00 | 125 |
| 13 Jul 2026 | $36.00 | 126 |
| 13 Jul 2026 | $36.00 | 128 |
| 13 Jul 2026 | $36.00 | 134 |
| 13 Jul 2026 | $36.00 | 130 |
| 13 Jul 2026 | $36.00 | 129 |
| 13 Jul 2026 | $36.00 | 124 |
| 12 Jul 2026 | $36.00 | 125 |
| 12 Jul 2026 | $36.00 | 128 |
| 12 Jul 2026 | $36.00 | 136 |
| 12 Jul 2026 | $36.00 | 137 |
Each row is a buylist price change CardKingdom posted. Wanted is how many copies they were buying at that price.
About Quantum Riddler
Quantum Riddler is a M Magic: The Gathering card from Edge of Eternities (#0072). The prices on this page come from CardKingdom's public buylist and retail feeds, last updated 17 Jul 2026.