Interesting idea but remember that besides the intended effects of increased tax income for the government and "punishing" the consumers of those particular goods (through the higher cost), it also punishes producers of those goods.
If snickers bars were $5 or white water rafting were $1000/trip, don't you think consumers would just say, "f that!" and spend their money elsewhere? Who is gonna explain the fairness of your plan to the snickers factory worker who loses their job or the white water rafting company when they go out of business?
That's an extreme outlook, however. One can easily say charging 5-10 for a snicker is going to cause an uproar.
However, going from 1.00 to 1.25 or 1.50 is a 25-50% markup (compared to a 500-1000% markup). Markups are just one piece of the puzzle, however. It's also the relative cost for the consumer. 50% is a lot for a company to make on a product but an extra 50 cents for the consumer isn't as big of a deal. White water rafting, depending on where you go, is like 100 bucks (some are a lot more and some are less). With 100 bucks, if you go to say, 120 bucks, it's not going to kill the market. If it was a 20 dollar increase all around, then there is no market shift for competitors for white water rafting. Most people who are into that kind of thing will not lose 20 bucks.
Cigarettes...well, we've seen time and time again that raising prices isn't going to make people really quit. Some do, which is AWESOME. But for others, they keep on paying.
I personally feel that pharmaceutical companies, gas and oil companies, PBMs, car manufacturers, insurance companies, etc. that have a strong grip on finances (relatively speaking) should be taxed a little bit more or have their role in the country re-evaluated.
For example, insurance for auto is MANDATED in all 50 states. You HAVE to have it to drive. The government is providing business to a company that is privately owned by telling consumers they have to purchase their product or they cannot drive their car that they purchased from the auto manufacturers. Therefore, because the government has mandated you use this company, the company should provide a larger quantity of money to the government in taxes and fees because the companies are doing a lot better than if they provided an optional coverage.
Besides, it's not like the insurance companies have as much invested to lose as other places. They sell an intangible product that spreads losses over millions of people. If people have claims and whatnot, the money everyone in the state pays is what actually pays an individual's claims; if the money going out reaches a certain threshold then the rates are raised over certain areas. If the money paid out is lower than a threshold (and money stays in the pot) then the company keeps it. In the meantime, while this money is being held interest and investments are being made for more money. Insurance companies are basically like large banks that don't give your money back to you. (Simplified statement, yes, but I'm an insurance agent and you'll see how the money comes rolling in sometimes.)
Pharmaceutical companies and insurance companies do the same thing; if I recall, isn't there a law that says you have to provide insurance for employees who are full-time? Schools require insurance as well. Don't both the companies lobby to have certain laws keep them exempt, such as monopoly laws? Or am I thinking of another industry? If I am, please correct me. If the government is willing to provide these exemptions and special roles in society, more money should be paid out.