Q: Can small farms be appraised?

No. Small farms can't be sold using the appraisal certificate system. All small farm sales must be traded by demolishing the existing farm and placing a new one.

Q: Why can't I see the seller's name?

The seller is kept anonymous until they choose to contact you. This is intended to keep the seller from being spammed and heckled in-game.

Q: Is  this free?

Yes. Listing and buying property is currently free. The escrow service for un-built plots is 3% of sales price, but is completely optional.