decent hydraulic jack, decent price where?

I like the air assisted 12 ton hydraulic jack that I got from Harbor Freight many years ago. I caught it on sale for about $90. 12 Ton Air/Hydraulic Bottle Jack

 

I’d go heavier than you think you need. I had a 12 ton hydraulic like RC posted and really needed a cheater pipe to get a axle up.
Harbor freight or northern tool would be where I would look.

 

Times 2 on the Harbor Freight jacks. I have about 4 bottle jacks laying around, 2 are from Harbor Freight.

 

This is what replaced the 12 ton. Haven’t had to use it yet.
https://m.northerntool.com/shop/tools/product_200788236_200788236

 

20 Ton Hydraulic Bottle Jack

This one works well, although I'd rather have a jack with a case to protect it. I've also got the low profile version of it as well. It will fit under my trailer and drive axles easy, but not the steer axle. You might need a block or something to lift it at a higher point like near the spring hanger. I think it lasted about 4 years before I finally had to put more oil in it.

 

Bigger probably better if you don't have an air source handy.

 

Every one of these big bottle jacks with an air motor come with a handle for armstrong operation. At least that way you'd have it if you were working near air, or at some point brought along a small compressor.

 

If Milwaukee would come out with a 20T jack that ran off a M18 battery it would sell like hotcakes.