I found a sale on a supplement I've been looking for that's been aout of stock a good bit lately. The supplement is NAC (N-Acetylcysteine) and it was $17 and some change where it's normally $25. That's a big savings when you have children! Anyway, I forgot this flipping thing was on my browser and when I went to purchase, the page refreshed and I was getting charged 23.17 a bottle! I asked the customer service what the heck was happening and they suggested I try to turn off this app. The price dropped to 19 and some change but that was NOT the original discount. I WILL be writing a serious complaint tomorrow because that pitiful little cash back in whatever 'credits' to jack me around like that is BS. I believe it is probably bordering on illegal!