Addictive Bite

in GURPS Horror 21, requires "an unbroken series of attacks", enhancement for leech.
Has similarities to Symptoms or Surge since it creates an effect after a certain fraction of HP is lost.
Pricing depends on if it gives just Addiction or Uncontrollable Appetite.
B122 has a variety of prices. This likely falls under Non-Chemical Addictions but would be Expensive if few people had Leech to do it on you. B440 rules on Withdrawal are used.
(12) is used as the UA ranking which gives a better guide to it's pricing. B159 has base -15 price and B121 establishes 121 means the listed cost.
Symptoms of a -15 point disadvantage at 1/3 HP only costs +45% so it's unclear why that's a full +100%.
Possibly it is more because healing the HP doesn't get rid of these.
Category:Enhancements