$4000 isn't exactly a lot of money for a serious investor in a new business. And besides, you can usually get them cheaper if you buy them in bulk.
Vending machines are not exactly top of the line technology, and if you accept bitcoin you won't even need any kind of money accepting and storing mechanisms. So they'd actually be cheaper.
It also depends on if you need your vending machine to also keep your products cool or not. Obviously a vending machine that sells candy would be much cheaper, since candy in general doesn't need to be cooled.
Some machines can go for as little as a couple of $100s
Anyways your point is correct, i have made contact and they are actually implementing bitcoin payment right now and this will be ready in a week, i was thinking it will be best to sell this back to the community, so other bitcoin investors can actually own it and install it around their place.. The price factor you all is correct i checked out and actually found that i can easily get for 1200$ and a cool one too..