Well, I've had good experience and luck with WKTP, remember it's a scrap / parts / junk yard so if the part you need is in high demand and there is not a lot of them you're going to pay more.
I first tried to buy a case for my transmission and they gave me an OK price, was still 1k, but after 3 days they called back to tell me that all the cases they had were cracked or broken and they didn't want to sell me one, I was a little bummed as a cracked case would have been better than my shattered case.

I ended up finding a great welder that had far more skill than me at welding cast so it turned out well.
I priced 2 badly worn / chipped gears and syncro sleeves new and they sold them to me for 1/3 less than new, and the parts were all in perfect condition.
It does pay to be NICE... I've delt with Junk / Scarp / parts yards all my life and it doesn't pay to treat them harshly as it usually comes back to bite you.
