For patients without health insurance, plantar wart removal typically costs less than $50 for over-the-counter salicylic acid treatment to less than $200 for prescription cream and less than $1,000 for laser treatment or cryotherapy. In rare cases in which surgery is required, costs could increase to $8,000 or more.
If a large amount of arsenic is swallowed by humans, in a form that is readily absorbed, it can cause rapid poisoning and death. The gut, the heart and the nervous system are affected.
It is probable that we actually need trace amounts of arsenic, as has been demonstrated in the case of some animal studies. We have yet to see a potential depletion in humans, because arsenic is quite ubiquitous in food. Arsenic is also readily excreted, so the main worry is taking in too much in a short time.