No rope from me, as it would not be attached to anything substantial enough to help... My recommendation is to walk away as quickly as you can.

Sell your long tube 17, cancel your membership on this board and never come near this site or a gun store again. You have started down a slippery slope that can lead you to years of firearm enjoyment and financial poverty.
BUT... that is not what I would do. I would negotiate hard on both of the 357s. The 19's and 27's are some of my very favorite guns. But know in advance that if you buy them, you will just want more - more of the same in different barrel lengths, more of the same with different dash numbers, more of the same in different finishes, at which time you will become interested in the pre-war guns and then there is no hope...