Update

Our Realtor says:

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I forwarded Page 1 to the listing agent. I also had an email for the seller so I sent it to him also. It is a ratified contract and it has been delivered.

Congratulations! You will soon be homeowners.
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Guess that makes it official. As long as the home inspection/termite inspection and radon test go OK, it's a done deal.(The home and termite inspections should be fine, the place looks perfect. Who knows about the Radon).

Zoinks.