If it doesn't sound right don't do it. And this doesn't sound right. As the others say find a different buyer even if there is a small price drop.
I had a deal go wrong when I was the purchaser. It did work out ok after a couple of years but I think I was very lucky.....

Hope it all works out for you.

Bob

861v8, UHD722v2, 5200s, 5200HCSEup, M6s, 3200s, DSW, Sony 55A95L, Oppo 203, Sky Q Silver
Samsung QE43Q65B, Oppo 105 & Sky Q Mini