I got one for free as a giveaway recently at work (im in the business).
But I have been seeing the same ones around town lately for about $5-6. Little yellow ones that are about 3x5 inches.
They are fine and if you loose it, so what.
If I need to measure heavy current (starter/battery?), I will likely have one of those really small resistors in line and just measure the voltage across the resistor. The resistor just looks like a bar of metal. Think Ive seen them in west marine.