Space tourism is something we here at Engadget have always been pretty fond of in theory -- it is the final frontier, after all -- but the prohibitive (exorbitant, extravagant, ridiculous) $200,000 price tag on a Virgin Galactic flight pretty much ended any small hopes we ever harbored of getting on one. So, would a reduction of about 50 percent be enough to get us to sign up? That's the question that Virginia-based Space Adventures is asking. The company's just announced it's going to offer flights into suborbital space through an exclusive agreement with Armadillo Aerospace, which is currently developing the rockets for the journeys. A trip with Space Adventures is set to cost just $102,