Paul.....sounds to me like you're referring to trimming/pruning branches, simply to clear the fence overhang. For less than $50 you can purchase a Black & Decker 3.4 amp powered hand saw, from Amazon or even at Target. If you don't have a sturdy tall ladder, check them out online. Prices range of course but even a really "good" ladder the height needed would cost you less than $200.00. Don't want to do it yourself? I'll bet you have dozens of friends or family members who can safely do this, just because they "love" you, owe you big time or want you to owe them!
I trim my own trees because after pricing all tree companies, no quote is fair to me. (original cheapskate) It is difficult to know if $875 is fair for your job because I haven't seen your trees nor the number of branches that need to be removed & it's nice to see the surrounding terrain.
My suggestion saves you approximately $625, if it's worth it to you to DIY.
My eldest son lives very near your area. I'll be happy to trim your trees but I understand plane fares are pretty high now. It would cost you considerably more. ( But I do miss my son a whole lot, Paul.....:( sniff sniff.) I don't do windows. ...Good