There are restrictions on the sale of dangerous chemicals, and in general the vendors that sell chemicals simply don't sell to private persons at all. I'm not sure where the exact legal boundaries are, and whether the typical stuff you need for genetic experiments falls under some restriction. In general the chemicals you need for that aren't that dangerous, so they might not be restricted by law, but you still will have trouble getting a reputable vendor to sell to you as a private person.

I'm very aware that there are restricted and watched/reported chemicals and equipment but the GP claimed that ordering this stuff will get you a visit from law enforcement which implies that they are aware of which things the site is selling that are restricted or watched.

I asked specifically what are they selling that is restricted or watched