Will's about right about those guthooks. Actually the guy who first put them on knives years ago, was a western knifemaker by the name, I think, of Seguine...something like that. He put them on the knife to act as coffe pot lifters/pot lid lifters. Some fool sharpened them and a lot of other folks bought them thinking they are a good idea. I only used one knife that had one; a Buck Zipper that my wife bought me years ago. Durned thing worked on one deer, and then quit. Never could(even these days) get it really sharp again, even using split belts on my grinder. Didn't like the idea anyway. Person should be able to use his/her blade to do that work...matter of pride. As far as knives for under $50 goes...good luck. When I first started knifemaking, my first customers were a bunch of Hog hunters down in Florida, Alabama, Virginia etc. Bunch of good ol' boys who all knew eachother. Knife I built for them was the standard Loveless Drop Hunter, except flat ground. First one was in 440C which they didn't care for, because it couldn't hold an edge long. All the others were in ATS-34/154CM and that was fine with them.
Obviously you aren't going to buy a loveless(he overprices them anyway), but the drop point blade shape is always a good one for use on game. I noticed in your post below this one, your looking to spend around $80 on a folder...suggest you focus your money on first one, then save up and get the other. Thing to look for is the steel....stay away from those who just say stainless, or surgical stainless, or 420J2 or 420HC and look for something better. Ats-34/154CM, BG-42, CPM-30V etc are all worth the price IF they have been properly heat treated/tempered. They need to be cryo'd(cryogenically cooled) to be worth the asking price. Also, still some great regular carbon steels out there...1095, 0-1, Carbon V, 52100, 5160 etc come to mind quick like. Take your time and do it right, is my advice.