Short answer: $300 is comfortably enough for a good floor jack. It is more than enough for a competent steel one, and it sits around the line where a well-specified service jack becomes possible. Above $300 you are mostly buying professional pump speed, chassis length and brand; below about $100 you start losing the specs that decide whether the jack fits your car at all.
What $300 should buy you
| Budget band | What you should get | What is still missing |
|---|---|---|
| Under $100 | A working hydraulic jack, often 2 ton, 13-14 in of lift | Top-end lift, chassis stiffness, sometimes a usable minimum height |
| $100 - $200 | 3 ton steel, 18-21 in of lift, long saddle neck | Low weight, rapid-rise pump |
| $200 - $300 | Aluminum at 3 ton, sub-4 in minimum, 19-20 in of lift | Professional pump speed, 30 in chassis length |
| Over $300 | Dual-piston speed, longer reach, published origin or certification | Nothing a home garage needs |
The two specs never worth saving money on
Minimum height
This is the spec that decides whether the jack works on your car at all. Measure floor-to-lift-point before you shop and refuse anything that does not clear it with margin. A $60 jack that cannot get under your sill is more expensive than a $200 one that can. If nothing in budget fits, a pair of low plastic ramps to gain 2-3 in is the cheap fix.
The stands, which are not optional
Budget the jack and the stands together or you will end up with a lifted car and nothing to put under it. Stands are the cheaper half of the purchase and the half that keeps you alive; see best budget jack stands and the combo page if you would rather buy both at once.
If your cap is lower than $300
The picks do not change much — they just shorten. Best budget floor jacks sets out exactly which specifications shrink at the cheap end and which of them you can live without. The short version: you can accept less maximum lift and a single-piston pump; you cannot accept a jack that does not fit under the car. If the cap is a hard one hundred dollars, best floor jacks under $100 is the same field filtered to what that money actually reaches.