The nicotine sources I've used in the past have hugely increased prices, offer nothing, or for business customers only. The TPD has made buying more than a few milliliters of high strength nicotine labeled suitable for human consumption, in an above board manner, far more difficult and expensive than it used to be.
It has made it harder but i can still get it from my source without any problem and at the same price. but TBH it stinks this country is turning into a nanny state