I'm Canadian, so I guess I don't count - but I'll give my 2 cents anyways.
1. Shipping.
- shipping is around $50/order, whether you buy 1 bottle or 30 bottles. As well, sometimes customs hits you with a $30-$40 bill on top of that.
2. I HATE running out of something I like.
They do not sell flavored BCAA's (like Extend) locally where I live, so I buy from Nutraplanet (plus it's cheaper...if you buy enough to warrent the shipping).
Considering the wait for your shipment can easily be 2 weeks or more at times - I'd rather buy enough to last me until the next time I buy.
Plus sometimes when I make my order, it says "OUT OF STOCK". WTF?! Can't let that happen again!
3. Sales.
I'm a sucker for that I guess...I think I'm part girl.
I know this product doesn't do half the things it says it will, but since it's 60% off, I can easily double/triple up, lol. (aka - stupidity hobby)
4. Perceptual savings.
Kind of like stashing 10% of your paycheck to a savings account and then forgetting about it means you'll be saving money without even realizing it - I can buy in bulk, then not have to buy for a while, which means I have more $$$ in my pocket for some reason. It's also a nice feeling when I run out of something, I can just go downstairs and get another one.
5. OCD
- I like to have backups of everything. I'll sometimes do that to clothing too, because I know there's a chance it will get wrecked. I bring spare parts around with me in my Jeep just in case, etc. I'll have certain foods stocked in case I'm trapped in the house for weeks due to alien invasions. I'll keep at least 2 girlfriends around just in case....
Kidding - I can afford to stock up on supps, but I can't afford 2 girls, lol.