Congrats (Fish-on) - (A playful term simply meaning a lead took some bait, is wiggling on the hook, and is waiting to be reeled in before the hook or line breaks)...
I think others have already expressed that the domain is worth more than $1k, you dropped the price too fast (50%) which may have created value doubt, and that the term/combination it strong enough to hold out a bit longer.
Depending if it's a student or faculty at the University determines if it's a big fish or little fish on the line.
Probing questions can help to determine that in your negotiations (Examples):
- Are you building something local, national, or global?
- Have you explored similar domain names already to see why this one is the best fit for your venture?
- Are you planning a full site launch soon or just wanting to secure the domain for now?
But then, i suppose it really doesn't matter. Regardless if they are a big fish or little fish, if they are not willing to pay your acquisition price, they can't get the domain anyways.
While, sticking to your guns and not lowering your price anymore could mean a better sale later (If the line breaks on this one), if you need the cash-flow now, once they counter, you could always use the classic close option.
For instance, you're at $10k, if they come back at $5k, you can respond with something like:
"Look, I'm at $10k and you're at $5k. We both know the domain is worth a bit more in today's market. so, let's meet in the middle at $7.5k so we can both feel like we got a good deal today.
Do you already have an escrow service in mind or would you like me to suggest one I normally use?"