I just read this section:

http://www.saudiembassy.net/Travel/VisaReq-Transit.asp

looks like transit visas are easy and free, but in reality are they really so? Any success stories here? I do have a relative who is willing to get his company to sponsor me but noticed it costs $100 for a bus visa.

Also I might not be able to produce all the flights that is the flight in and out on one ticket, I plan on buying one ticket into DMM and another separate one out. Would this raise some eyebrows? If I don't get the visa will RJ and QR interline my bags all the way through?