Good Afternoon,
As others have stated, you can buy gutter guards that you can easily install. I bought mine from HD, they are 3ft long and I believe they were about $3 at the time. They keep out most everything, although I dont have an issue with pines near the gutters.
IMO, leaf filter guards installed by a contractor are way over priced.
Do it yourself and save a lot of $$$.
Also, if you do have pine trees, unless its really heavy dropping needles on the house, I would think that the next rain storm would wash away most of that, especially with a steeper pitch roof !