Very good ideas above. Don't forget the standard Buck 110, 112, fixed blades from Kabar, and ontario with prices from $50 up to $80.
Don't forget inexpensive knives from the Spyderco "Byrd" line, as well as up into the resilience, Delica, dragonfly, Endura,
As you find out what's selling in your area you might branch out into things like Moras, and folder classics like "black cat K55" Mercator ( german lockback already old by the time I was a child in the early 60's yet still performing well and in demand), Douk Douk, Opinels, and other international favorites.
You might think of upgrading to a dealers membership allowing you to advertise and sell here on Blade Forum. Without that there won't be many more threads like this as it wouldn't be fair to give you free advertising while others are having to pay for it.
Good luck. Try the upgrade. It gives you access to resources , information and experience that will make it worth more than your small investment in membership fees.
Joe