Unfortunately you're up against some of the difficult new realities that especially affect mid range stuff (Or what's mid range for me, someone that can afford more expensive cards might think of it as low end)
The ones in the for sale post aren't bad. But new stuff seems to be graded much tougher than old stuff.
The next part of the problem is that - at least for me- when I look at buying a card there's a few things I consider. After I get past the "do I have the money" and "do I already have one" the next thing is the quality vs price.
And that's where middling stuff suffers. I find myself looking at raw cards and figuring on what grade I think it would get if I sent it in.
Lets say a card is pretty nice, and I don't have one. That's two plusses
And lets say it's $14 So I look at sold copies on Ebay. Yes, not every sale will be a good one, but there's enough to get a range.
The 8s look to be between 20 and 30, a 7 sold for 10 or less and 9s are 50+
So I have to decide if the one available is an 8 or not. If I think it is, then it's an ok deal assuming I'd send it in on a special. If not then it's not a good deal.
Next, I look at similar raw cards, especially since I don't really collect graded cards. Yes, I don't actively collect them, but they do have a lot of influence on pricing. Now a raw example with nice centering sells for $3-4 with usually another 3 shipping, and ones with typical centering are usually $1-2
So assuming I really want that card and soon, I have to decide between.
A typical one for 1-2
A nicely centered one for 3-4
A graded one but "only " a 7 for 10
The Available one for 14
A graded one that's an 8 for 20-30
Or I could go for a 9 and spend maybe 50
None of those are outside my budget, (aside from my brain being stuck in the time when 75 minis were a few cents each maybe .25 for the minor stars. )
I'm not really that into graded cards, so I'd probably choose the nicely centered raw card for $4. Lately I've been looking at the collections differently though. So since someone will eventually need to sell it, I might go for a graded card, and one of the lower priced 8s isn't that much more than the nice ungraded one at 14 so it's a nice option with less risk.
And that's the bind that ALL sellers find themselves in. They have to spend to get nice stuff to sell, but getting a decent return is hard if they can't buy cheaply enough. And there are a lot of competitors willing to overpay.
And a lot of buyers who are even cheaper than I am.
Steve B