From the Advanced Player's Guide, page 291:
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Sizzling Arrow
Price 1,516 gp
This +1 corrosive arrow continues to leak acid onto its target each round, dealing 1d6 acid damage on the attacker’s turn for the next 3 rounds. Removing the arrow is a DC 10 Heal check and prevents any further damage from the arrow (the DC increases to 15 if the target tries to remove the arrow from himself). Removing the arrow destroys it, and it dissolves up once the 3 rounds pass.
Construction requirements: Craft Magic Arms and Armor, acid arrow; Cost 758 gp
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Is the price intended for 50 arrows (as usual) or just for one?