Far better to buy a budget brand from the high street that an to risk rip offs on line. There are loads in Superdrug to choose from. I bought an eyebrow kit from Barry M for about £4. Flipping marvellous.
I buy my cosmetics in Boots, Superdrug or, mostly, from Avon. I certainly wouldn't buy from market stalls and I'm not sure I would trust big names from any old ebay seller either. Not that I buy big name cosmetics any way!
I always thought that apple pips contained strychnine, but a bit of research has found that they actually contain cyanide (or a compound that converts to cyanide). Apparently, 143 apple pips could do you in. On the other hand, the compound has been suggested as a cancer cure - so you could try to poison someone and end up curing them!