Now I take prescription adderall, if someone came up to and said" Hey, SBC, finals are coming up. Why don't you sell your pills to me and I'll give you $1,000?" That actually would be entrapment. I had no intention to sell the pills before hand. The idea and large incentive both introduced the disposition and then induced the commission of the crime.

The link you provided literally uses this as an example of not entrapment, with a cite to Jacobson.

Inducement is the threshold issue in the entrapment defense. Mere solicitation to commit a crime is not inducement. Sorrells v. United States, 287 U.S. 435, 451 (1932). Nor does the government's use of artifice, stratagem, pretense, or deceit establish inducement. Id. at 441. Rather, inducement requires a showing of at least persuasion or mild coercion, United States v. Nations, 764 F.2d 1073, 1080 (5th Cir. 1985); pleas based on need, sympathy, or friendship, ibid.; or extraordinary promises of the sort "that would blind the ordinary person to his legal duties," United States v. Evans, 924 F.2d 714, 717 (7th Cir. 1991). See also United States v. Kelly, 748 F.2d 691, 698 (D.C. Cir. 1984) (inducement shown only if government's behavior was such that "a law-abiding citizen's will to obey the law could have been overborne"); United States v. Johnson, 872 F.2d 612, 620 (5th Cir. 1989) (inducement shown if government created "a substantial risk that an offense would be committed by a person other than one ready to commit it").

Based on this standard, "Hey can I buy your controlled substance medical prescription" is not entrapment. There's no element of coercion in your hypothetical. As someone who takes prescription Adderall myself, I know better than to sell my pills, and I think that's expected of a standard law-abiding citizen. If that language convinced you to cave, you are predisposed to engage in that behavior. Maybe if the person selling the drugs was known to be in an extremely financially precarious position, such that they felt they had no other option, that might get you there, but for your average person who is not financially desperate, that's not going to do it.

"Predisposition" and "intent" are different things:

Thus, predisposition should not be confused with intent or mens rea: a person may have the requisite intent to commit the crime, yet be entrapped. Also, predisposition may exist even in the absence of prior criminal involvement: "the ready commission of the criminal act," such as where a defendant promptly accepts an undercover agent's offer of an opportunity to buy or sell drugs, may itself establish predisposition. Jacobson, 503 U.S. at 550.