A good pulsed machine doesn't mean expensive. Here's what I've been using for the past couple of years. It's strictly a pulsed machine.
Ultra-G Digital Galvanic Stimulator,, Ultra-G, Medical Supplies, Electrotherapy, Muscle Stimulators
Check around for the best possible price. You may be able to find this machine for $150. Prices vary.
Digital High Voltage Pulsed Galvanic Stimulator has a twin peaked monophasic waveform with fixed interpulse Interval of 100us
Each pulse is much shorter in duration (5us) and can achieve much higher voltage than conventional stimulator
Digital High Volt Pulsed Galvanic Stimulator
Power: 9V battery or AC Adaptor
Output: Single Channel. Two active outputs and one dispersive return. Where active 1 and dispesive located on the output of CH1 the active 2 located on the output of CH2
Output Voltage Adjustable 0-350 Volts maximum (500 ohm load)
Wave Form: Twin peaked monophasic waveform with fixed interpulse interval of 100u
Pulse Rate: 1z-120Hz (adjustable) 1Hz/step
Pulse Duration: 5 uS
Interpulse Interval: 100 us
Modes: Continuous Alternating
1 Year Manufacturer Warranty System
Includes: Stimulator Lead Wires 4 Self-Stick Hypoallergenic Disposable Electrodes 9V Battery and AC Adapter Hard Plastic Carrying Case & Instruction Booklet