Gutter guards rarely work...
Used to be in the industry, and they are overpriced and you will see problems with them.
The punched aluminum gg lets in dirt and pine needles which clog gutters over time, the screen mesh coats with pollen and won't let water in, plus it still has pine needles sticking up all over it no matter what they say.
The Rhino and Evelyn's leaf solution (both made by the same company) cost $3 a foot . The Xtreme Gutter Guard also made by the same company) is exactly the same but only $1.39.
You just have to negotiate the price. Pretty shady business if you ask me.