For $8000 you can launch your own satellite into low earth orbit at 310 km. It’ll stay up there for around 3 weeks untill it burns up in reentry. They come in kit form and you can stuff whatever you want in there as long as it weighs less than 0.75 kg and fits into the tube they send you. You can double, triple or quadruple the tubesat, allowing you to launch greater payloads. They will be launched on Interobital’s Neptune rocket, which carries 32 tubesats per time. They expect to launch 1 rocket per month from 2010 from the IOS Spaceport Tonga.