Hurry, supplies are limited. Call NOW! Why are they rushing you? That was the part that bugged me. Don't play that game; take your time and do the work to get it right.
Yeah, I suspected it might be artificial pressure, but the pressure is only to sign an LoI, and their justification is plausible (we need to cut the other deal loose).
After signing the LoI there is 45 days to complete the deal during which everyone will do due-diligence.
