1. Undersold - domainer could have made more
2. KT.ca is available on uni, the L for LTD is not a good choice.
The business owner did not see enough value in pursuing KT.ca - too bad
Sometimes a bird in the hand is worth two in the bush.
The domain was regged in 2010 - and it might have been the first offer in that entire time... The owner might have been waiting another 15 years for another offer.
They might have just bought a really nice TBR domain for $2K, so from their perspective, it was a free upgrade to a way better domain name with way more potential.
They might have needed renewal funds for the rest of their portfolio.
Many possible ways for that owner to justify the sale for their situation.
That being said, I would have stubbornly refused to sell it that low... I'd have pushed for a payment plan to get much closer to the desired price, but over time.
I'm finding that payment plans are happening more frequently for me. Basically I offer my price, if they turn it down or counter, then I counter with a payment plan instead. I just received another verbal agreement on a $10K sale, but on a payment plan - we're just working on the terms. That's where I'm pretty flexible, I try to find a plan that works for the buyer.