Unless you are a handyman, if you are looking for quality seamless gutters, it is actually more reasonable to have your gutters professionally installed than to try to do it yourself.
For reasons I will discuss momentarily, it is not cost-effective for a company that manufactures seamless gutters to drive to your location, measure and cut the gutters, and simply leave them (drop-offs) for the do-it-yourself. You can also get Seamless Gutter & Downpipe Installation services in Vancouver online.
Most of the time, if a gutter company is even willing to do a drop-off it is based on your measurements and your net cost per foot will actually be higher for the gutter material than had the price included the cost of installation.
Professionals gutter installers measure to tolerances of as little as an eighth of an inch for a quality fit. What if your measurement is wrong?
There is too much overhead built into the process to make seamless gutter drop-offs profitable for most gutter companies. The cost of keeping a truck on the road, the inventory, the maintenance of the gutter manufacturing equipment, and the manpower involved make it impractical to drop off anything but lengths of gutter that are far larger than the average homeowner will require.
Sectional gutters are easier to install but their disadvantages make the trade-off a bad one. Unless you are scraping for the cash, and these days that can happen, seamless gutters are a far better investment in your property and they do not lend themselves well for the do-it-yourselfer.