When my father-in-law died we actually looked into Celestis for a space launch. At the time, they were offering several options. Since they basically rent space in whatever launches are going up, it really depends on who is going where and if they can hitch a ride. At that time there was a possibility of a moon landing with some unmanned mission and even a possibility of hitching on one of the Mars exploration missions. Most launches now are satellite orbital or sub orbital so that is the easiest and cheapest. But if you have the bucks and are willing to wait for a ride - just don't forget your towel!