I think it's 4x the price of even the most expensive cart I have seen. But I guess Grit Guard is well known company, some people will buy anything just because a specific company produced it, just look at Apple...
For those who have shopped for plastic carts should notice that it is made by the same company that makes the Meg's and Adam's cart. I have the Meg's (I paid $130 for it) and I know I know Luxor sells a many similiar cart. You can get a cheap metal cart with screws and guaranteed to rust for much less but even at places like Northern Hydraulic a good plastic cart with decent casters is not cheap. I can assure you there is more than $5 worth of plastic in the cart plus the investment in the molds (six figures) that are used to produce it. Some spend their money on $100 wax that will not be around in a few years or you can invest in a cart that will last much longer.
If you are talking about the AG one.... I agree. I recently saw this being advertised on Club Lexus and immediately thought the price was an absolute joke... I mean WTF... $170 for a fucking empty cart?