Unless one of those is super collectible, I think you did ok. It's not like the guy who sold a Schatt and Morgan swing guard for like $40 a couple months back.
It's hard to place an exact value on stag-handled traditionals, though, because it's a natural material that varies wildly. So you probably sold those for around the average value for those knives, but your particular examples have especially nice contrast on the stag. Some collectors would be willing to pay more for that, while others wouldn't. And if you happen to have two collectors who really like the look of a particular set of stag covers, it can result in a bidding war that produces a final price that other sellers can never achieve thereafter.