Cheapest priced copy (Ravnica Remastered): $6.49 at Card Kingdom, near mint, their price list as of .
Illusionist's Bracers 
Artifact — Equipment · Rare · Gatecrash · #231
Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.
Equip {3}
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $6.49 to $9.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Gatecrash | 231 | Rare | $7.99 | $9.99 |
| The List | GTC-231 | Rare | $6.99 | — |
| Ravnica Remastered | 260 | Rare | $6.49 | $6.99 |
| Ravnica Remastered | 392 | Rare | $6.99 | $6.99 |
| Ravnica Remastered | 392z | Rare | — | — |
7 rulings from Wizards of the Coast
- 24 January 2013If the ability has {X} in its cost, the value of X is copied.
- 24 January 2013The copy will have the same targets as the ability it's copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can't choose a new legal target, then it remains unchanged (even if the current target is illegal).
- 24 January 2013An activated ability is written in the form "Cost: Effect."
- 24 January 2013If the ability is modal (that is, it says "Choose one —" or the like), the copy will have the same mode. You can't choose a different one.
- 24 January 2013If Illusionist's Bracers somehow becomes equipped to a creature an opponent controls, and an activated ability (that isn't a mana ability) of that creature is activated, you will control the copy of that ability.
- 24 January 2013If the cost of an activated ability requires Illusionist's Bracers or the equipped creature to be sacrificed, the ability won't be copied. At the time the ability is considered activated (after all costs are paid), Illusionist's Bracers is no longer equipped to that creature.
- 15 April 2013A mana ability is an ability that (1) isn't a loyalty ability, (2) doesn't target, and (3) could add mana when it resolves.