This is just how it is and I'm no fan of it either but I doubt they are making much profit on a 7.27 shipping charge. The REAL issue is that's for UPS mail innovations shipping and that's a rip off when they could put it in a small flat rate box and ship it anyplace in the country for the same price and it would arrive in 2-3 days vs 5-15 depending on your location.
I have to defend CZ a bit here...
1st - the above quote is correct. You buy a flat box and whatever is in it makes no difference. Shipping lead would even be the same price if it fit in the box.
2nd - when your primary business isn't to be a shipper, that and answering a phone are a pain in the a$$. It detracts from your daily accomplishment routine. whatever you establish as a generic, easiest to do thing, is the best for business flow.
3rd - if you think that Amazon is priced the best because you get free shipping, you are waaaayyy wrong.
Don't get me wrong, I seek out the most efficient shipping for my business that I can get. I like what Amazon does but, I probably had to compromise on something else to use them. Now those TV bargain thangs, yep they make money on shipping, but CZ more than likely found an option that most can live with & it is easiest for their business to take the time out for their shipping routine...