Would GEC be in my price range? I like the look of some of them. Edit: looked at the price, I'm such a newbie
GEC knives are stunning looking, aren't they?!?!? Worth every penny, too.
One thing they aren't though. They aren't the original American lock-back. Only Buck is. And IMO, this is the heart of the set of trade-offs you need to consider. If you want an American made and an original at an affordable price, you can get the Buck 110 made of out of their really well hardened 420HC steel for under $35 brand spanking new. Add to this Buck's insanely good lifetime warranty and I think that's just astonishing. (I prefer the 112 for EDC use but there you have it.)
Now, if your goal is to get a less expensive knife with still decent steel, you can look used. Bucks are common used, but start to get collectible enough that the prices can hold close to new prices, so unless you're looking for a specific older Buck, your best bet might just be to buy a new Buck. Another older brand of folding lockers is the Schrade LB7. The Schrade+ stainless (should be on the tang stamp) has a good reputation. Prices seem to vary wildly as the US made Schrades are starting to fetch big bucks. But, there are still deals to be found.
If your goal is stay cheap and you don't care so much for blade quality, the new Chinese made Taylor Brand Schrade LB7s are less expensive than Bucks but as I understand it, use generic 440 steel (could be off on that - worth double checking). Personally, I forgo a single bar tab and just get a new US made Buck 110 than an only slightly less expensive new LB7. I think the 110 is a better knife, especially regarding the steel.
If your goal is to pick different blade profiles, different steels and different handle materials well then at that point you're moving well away from your original price point and into GEC territory. You have a lot of options at that point beyond GEC too. Boker, Puma and Bear and Sons all make traditional lock backs. And Buck offers their own customized Buck 110s. So, your choice is between an original Buck 110 for about $35 or an homage to the Buck 110 for 2, 3 or 4 times as much.