Maybe you could have your students build them? (Score 2, Interesting)

You could have your students build a fairly good PC based O-Scope with eight 5-Mhz sample-and-hold A/D converters, a 40Mhz clock, a small bank of SRAM, and some glue logic to blast all the data back to the PC. Maybe get together with the Computer Science professors, and have their students write the PC software. Then your school would only have to shell out for the parts, and the project itself would teach your students a lot about how real-world design works. Tech