yeah what Rob said, for 20 to 20k you can make a set of cheap probes, just go to radio shack and get some bnc connectors,
maybe buy some coax if you do not have any old patch cords around,
i like the mini clips on the end, response will be fine but if you want to measure noise or any real small signal voltages, you will get some fuzz below 10 millivolts, but even some of the best leads do this so no biggy,