An unlimited lifetime supply of ampetamine would not be very expensive to make.
Usually you just mix benzaldehyde and Nitroethane for p2np and reduce to amphetamine but Nitroethane has become very tightly controlled because of its use in MDMA manufacture and terrorism.
An alternate synthesis would be to make p2p from MEK and benzaldehyde via Baeyer-Villiger oxidation and catalytically hydrogenate it to amphetamine.
You could make a kilogram for a few hundred dollars if you set it up properly.
Another way you could do this is get a bunch of Mandelic Acid (acne cream treatment, like Salicylic acid but stronger) and reduce it with HI acid (potassium iodide and phosphoric acid) to make phenylacetic acid to phenylacetone and then you do this
A mixture of 40 g (0.3 mole) phenylacetone, 200 ml ethanol, 200 ml 25% ammonia, 40g (1.5 mole) Al-grit and 0.3 g (1 mmol) HgCl2 is warmed with vigorous stirring until reaction takes place, after which warming is stopped immediately. Cooling should be applied if the reaction becomes too violent. When the violence of the reaction has diminished, the mixture is refluxed with vigorous stirring for about 2 hr, concentrated in vacuo to 200 ml and poured into ice water, alkalinized with 120 g KOH, and extracted with ether. The extractions are treated with 20% HCl, the resulting water layer alkalinized and extracted with 150 ml ether. The organic layer is dried over Na2SO4, the ether evaporated, and the residue distilled in vacuo. Yield: 12.5 g (30%).
Preparation of amphetamine sulfate yielded 96-98% product with a purity of 99.2-99.8% (USP grade).
Above reaction is nearly 100% OTC. Mandelic acid is not hard to get/make. HI acid is also pretty easy to make of you have the right glassware.
