A look at what is currently available on eBay

PP-150 100 MHz Oscilloscope Probe X1/X10 Passive
US $.99

PP-200 200 MHz Oscilloscope Probe X1/X10 Passive
US $4.99

T3100 Oscilloscope Probe X100 Passive 100 MHz
US $7.99

Tektronix P6139A Passive 500Mhz oscilloscope probe
US $125.40

OSCILLOSCOPE PROBE KIT TPI # GTP-100A-2 PASSIVE / SWITCHABLE – NEW IN [...]